Mustang GT 2011–14 (Coyote 5.0) → Haltech Nexus S3 HT-213000 (auto)

Mustang GT 2011–14 (Coyote 5.0) — Haltech — Nexus S3

⚠ NOT CHECKED. Don't build from this.

Drawn by Michael Gnankou · Rev 0 · draft · 2026-10-08

Before you start

Status	draft · not yet verified: nobody has reported building and running this harness
Open errors	5: read the Findings page before cutting any wire
Size of the job	63 wires · 6 connectors · 1 part lines
Tools	Crimp and extraction tools for each terminal family (see Connectors) · wire strippers · multimeter · heat gun + heat-shrink
Order of work	1. Check every part against the parts list. 2. Cut and label every wire (labels: Export → Wire labels). 3. Crimp and pin connector by connector, ticking the build checklist. 4. Run the bench test with nothing plugged in and the battery disconnected. 5. Only then connect the ECU and power up.

Build checklist

Tick each box as you go. Continuity: meter from end to end, expect under 1 Ω.

Wire	From	To	Gauge	Cut	Label	Crimp A	Crimp B	Pin A	Pin B	Continuity
W1	OEM-C175E-18	SP-14V-1	0.85	☐	☐	☐	☐	☐	☐	☐
W2	SP-14V-1	NEXUSS3-A-18	0.85	☐	☐	☐	☐	☐	☐	☐
W3	SP-14V-1	NEXUSS3-A-25	0.85	☐	☐	☐	☐	☐	☐	☐
W4	OEM-C175E-23	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W5	OEM-C175E-40	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W6	OEM-C175E-49	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W7	OEM-C175E-52	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W8	OEM-C175E-54	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W9	OEM-C175E-67	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W10	OEM-C175E-69	SP-0V-1	0.5	☐	☐	☐	☐	☐	☐	☐
W11	SP-0V-1	NEXUSS3-C-26	0.5	☐	☐	☐	☐	☐	☐	☐
W12	OEM-C175E-17	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W13	OEM-C175E-34	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W14	OEM-C175E-8	SP-5V1-1	0.5	☐	☐	☐	☐	☐	☐	☐
W15	SP-5V1-1	NEXUSS3-C-25	0.5	☐	☐	☐	☐	☐	☐	☐
W16	OEM-C175E-70	NEXUSS3-C-1	0.5	☐	☐	☐	☐	☐	☐	☐
W17	SP-0V-1	NEXUSS3-C-2	0.5	☐	☐	☐	☐	☐	☐	☐
W18	OEM-C175E-55	NEXUSS3-C-3	0.5	☐	☐	☐	☐	☐	☐	☐
W19	SP-0V-1	NEXUSS3-C-4	0.5	☐	☐	☐	☐	☐	☐	☐
W20	OEM-C175E-56	NEXUSS3-C-5	0.5	☐	☐	☐	☐	☐	☐	☐
W21	OEM-C175E-41	NEXUSS3-C-6	0.5	☐	☐	☐	☐	☐	☐	☐
W22	OEM-C175E-42	NEXUSS3-C-7	0.5	☐	☐	☐	☐	☐	☐	☐
W23	OEM-C175E-53	NEXUSS3-C-23	0.5	☐	☐	☐	☐	☐	☐	☐
W24	OEM-C175E-68	NEXUSS3-C-24	0.5	☐	☐	☐	☐	☐	☐	☐
W25	OEM-C175E-87	NEXUSS3-A-27	0.5	☐	☐	☐	☐	☐	☐	☐
W26	OEM-C175E-88	NEXUSS3-A-28	0.5	☐	☐	☐	☐	☐	☐	☐
W27	OEM-C175E-89	NEXUSS3-A-29	0.5	☐	☐	☐	☐	☐	☐	☐
W28	OEM-C175E-90	NEXUSS3-A-30	0.5	☐	☐	☐	☐	☐	☐	☐
W29	OEM-C175E-92	NEXUSS3-A-31	0.5	☐	☐	☐	☐	☐	☐	☐
W30	OEM-C175E-93	NEXUSS3-A-32	0.5	☐	☐	☐	☐	☐	☐	☐
W31	OEM-C175E-94	NEXUSS3-A-33	0.5	☐	☐	☐	☐	☐	☐	☐
W32	OEM-C175E-95	NEXUSS3-A-34	0.5	☐	☐	☐	☐	☐	☐	☐
W33	OEM-C175E-1	NEXUSS3-A-1	0.5	☐	☐	☐	☐	☐	☐	☐
W34	OEM-C175E-62	NEXUSS3-A-2	0.5	☐	☐	☐	☐	☐	☐	☐
W35	OEM-C175E-46	NEXUSS3-A-3	0.5	☐	☐	☐	☐	☐	☐	☐
W36	OEM-C175E-3	NEXUSS3-A-4	0.5	☐	☐	☐	☐	☐	☐	☐
W37	OEM-C175E-2	NEXUSS3-A-5	0.5	☐	☐	☐	☐	☐	☐	☐
W38	OEM-C175E-31	NEXUSS3-A-6	0.5	☐	☐	☐	☐	☐	☐	☐
W39	OEM-C175E-61	NEXUSS3-A-7	0.5	☐	☐	☐	☐	☐	☐	☐
W40	OEM-C175E-16	NEXUSS3-A-8	0.5	☐	☐	☐	☐	☐	☐	☐
W41	OEM-C175E-81	NEXUSS3-A-20	0.5	☐	☐	☐	☐	☐	☐	☐
W42	OEM-C175E-82	NEXUSS3-A-19	0.5	☐	☐	☐	☐	☐	☐	☐
W43	OEM-C175E-78	NEXUSS3-C-33	0.5	☐	☐	☐	☐	☐	☐	☐
W44	OEM-C175E-79	NEXUSS3-A-9	0.5	☐	☐	☐	☐	☐	☐	☐
W45	OEM-C175E-83	NEXUSS3-A-12	0.5	☐	☐	☐	☐	☐	☐	☐
W46	OEM-C175E-84	NEXUSS3-A-14	0.5	☐	☐	☐	☐	☐	☐	☐
W47	OEM-C175E-5	NEXUSS3-A-15	0.5	☐	☐	☐	☐	☐	☐	☐
W48	OEM-C175E-4	NEXUSS3-A-16	0.5	☐	☐	☐	☐	☐	☐	☐
W49	OEM-C175E-7	NEXUSS3-A-17	0.5	☐	☐	☐	☐	☐	☐	☐
W50	OEM-C175E-6	NEXUSS3-A-21	0.5	☐	☐	☐	☐	☐	☐	☐
W51	OEM-C175E-71	NEXUSS3-A-22	0.5	☐	☐	☐	☐	☐	☐	☐
W52	OEM-C175E-35	NEXUSS3-C-31	0.5	☐	☐	☐	☐	☐	☐	☐
W53	OEM-C175E-50	NEXUSS3-C-32	0.5	☐	☐	☐	☐	☐	☐	☐
W54	OEM-C175E-20	NEXUSS3-C-30	0.5	☐	☐	☐	☐	☐	☐	☐
W55	OEM-C175E-44	NEXUSS3-C-10	0.5	☐	☐	☐	☐	☐	☐	☐
W56	OEM-C175E-10	NEXUSS3-C-11	0.5	☐	☐	☐	☐	☐	☐	☐
W57	OEM-C175E-9	NEXUSS3-C-12	0.5	☐	☐	☐	☐	☐	☐	☐
W58	OEM-C175E-27	NEXUSS3-C-13	0.5	☐	☐	☐	☐	☐	☐	☐
W59	OEM-C175E-47	NEXUSS3-C-14	0.5	☐	☐	☐	☐	☐	☐	☐
W60	OEM-C175E-45	NEXUSS3-C-15	0.5	☐	☐	☐	☐	☐	☐	☐
W61	OEM-C175E-30	NEXUSS3-C-8	0.5	☐	☐	☐	☐	☐	☐	☐
W62	OEM-C175E-48	NEXUSS3-C-19	0.5	☐	☐	☐	☐	☐	☐	☐
W63	OEM-C175E-57	NEXUSS3-C-20	0.5	☐	☐	☐	☐	☐	☐	☐

Bench test (before first power-up)

Battery disconnected, ECU and every sensor unplugged. Meter on resistance. Each pair below must read open (OL): a reading means a pinched wire, a stray strand or a mis-pinned cavity. Then check continuity of every wire (last column of the build checklist).

#	Probe A	Probe B	Expect	Why
1	NEXUSS3-A-18	NEXUSS3-C-2	open (OL)	+12 V supply must not touch sensor ground
2	NEXUSS3-C-25	NEXUSS3-C-2	open (OL)	5 V sensor reference must not touch sensor ground
3	NEXUSS3-C-25	NEXUSS3-A-18	open (OL)	5 V sensor reference must not touch +12 V supply

Revisions

Rev	Label	By	Date
No revisions yet.

Schematic

Connectors

NEXUSS3-A

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Injector 1	—	W33	—	0.5	OEM-C175E-1	—	—	—
10	Battery ground	—	—	—	—	—	—	—	—
11	Battery ground	—	—	—	—	—	—	—	—
12	DPO 2	—	W45	—	0.5	OEM-C175E-83	—	—	—
13	Ignition switch input	—	—	—	—	—	—	—	—
14	DPO 3	—	W46	—	0.5	OEM-C175E-84	—	—	—
15	DPO 4	—	W47	—	0.5	OEM-C175E-5	—	—	—
16	DPO 5	—	W48	—	0.5	OEM-C175E-4	—	—	—
17	DPO 6	—	W49	—	0.5	OEM-C175E-7	—	—	—
18	+12V switched input	—	W2	—	0.85	SP-14V-1	—	—	—
19	HBO 1	—	W42	—	0.5	OEM-C175E-82	—	—	—
2	Injector 2	—	W34	—	0.5	OEM-C175E-62	—	—	—
20	HBO 2	—	W41	—	0.5	OEM-C175E-81	—	—	—
21	HBO 3	—	W50	—	0.5	OEM-C175E-6	—	—	—
22	HBO 4	—	W51	—	0.5	OEM-C175E-71	—	—	—
23	CAN 1 High	—	—	—	—	—	—	—	—
24	CAN 1 Low	—	—	—	—	—	—	—	—
25	+12V switched input	—	W3	—	0.85	SP-14V-1	—	—	—
26	ECR output	—	—	—	—	—	—	—	—
27	Ignition 1	—	W25	—	0.5	OEM-C175E-87	—	—	—
28	Ignition 2	—	W26	—	0.5	OEM-C175E-88	—	—	—
29	Ignition 3	—	W27	—	0.5	OEM-C175E-89	—	—	—
3	Injector 3	—	W35	—	0.5	OEM-C175E-46	—	—	—
30	Ignition 4	—	W28	—	0.5	OEM-C175E-90	—	—	—
31	Ignition 5	—	W29	—	0.5	OEM-C175E-92	—	—	—
32	Ignition 6	—	W30	—	0.5	OEM-C175E-93	—	—	—
33	Ignition 7	—	W31	—	0.5	OEM-C175E-94	—	—	—
34	Ignition 8	—	W32	—	0.5	OEM-C175E-95	—	—	—
4	Injector 4	—	W36	—	0.5	OEM-C175E-3	—	—	—
5	Injector 5	—	W37	—	0.5	OEM-C175E-2	—	—	—
6	Injector 6	—	W38	—	0.5	OEM-C175E-31	—	—	—
7	Injector 7	—	W39	—	0.5	OEM-C175E-61	—	—	—
8	Injector 8	—	W40	—	0.5	OEM-C175E-16	—	—	—
9	DPO 1	—	W44	—	0.5	OEM-C175E-79	—	—	—

NEXUSS3-C

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Trigger +	—	W16	—	0.5	OEM-C175E-70	—	—	—
10	AVI 1	—	W55	—	0.5	OEM-C175E-44	—	—	—
11	AVI 2	—	W56	—	0.5	OEM-C175E-10	—	—	—
12	AVI 3	—	W57	—	0.5	OEM-C175E-9	—	—	—
13	AVI 4	—	W58	—	0.5	OEM-C175E-27	—	—	—
14	AVI 5	—	W59	—	0.5	OEM-C175E-47	—	—	—
15	AVI 6	—	W60	—	0.5	OEM-C175E-45	—	—	—
16	AVI 7	—	—	—	—	—	—	—	—
17	AVI 8	—	—	—	—	—	—	—	—
18	AVI 9	—	—	—	—	—	—	—	—
19	SPI 5	—	W62	—	0.5	OEM-C175E-48	—	—	—
2	Trigger -	—	W17	—	0.5	SP-0V-1	—	—	—
20	SPI 6	—	W63	—	0.5	OEM-C175E-57	—	—	—
21	CAN 2 High	—	—	—	—	—	—	—	—
22	CAN 2 Low	—	—	—	—	—	—	—	—
23	Knock 1	—	W23	—	0.5	OEM-C175E-53	—	—	—
24	Knock 2	—	W24	—	0.5	OEM-C175E-68	—	—	—
25	+5V	—	W15	—	0.5	SP-5V1-1	—	—	—
26	Signal ground	—	W11	—	0.5	SP-0V-1	—	—	—
27	AVI 10	—	—	—	—	—	—	—	—
28	AVI 11	—	—	—	—	—	—	—	—
29	WBI 1 Heater +	—	—	—	—	—	—	—	—
3	Home +	—	W18	—	0.5	OEM-C175E-55	—	—	—
30	WBI 1 Input	—	W54	—	0.5	OEM-C175E-20	—	—	—
31	WBI 1 Pump	—	W52	—	0.5	OEM-C175E-35	—	—	—
32	WBI 1 Nernst	—	W53	—	0.5	OEM-C175E-50	—	—	—
33	WBI 1 Heater -	—	W43	—	0.5	OEM-C175E-78	—	—	—
34	WBI 1 Cal	—	—	—	—	—	—	—	—
4	Home -	—	W19	—	0.5	SP-0V-1	—	—	—
5	SPI 1	—	W20	—	0.5	OEM-C175E-56	—	—	—
6	SPI 2	—	W21	—	0.5	OEM-C175E-41	—	—	—
7	SPI 3	—	W22	—	0.5	OEM-C175E-42	—	—	—
8	SPI 4	—	W61	—	0.5	OEM-C175E-30	—	—	—
9	+8V	—	—	—	—	—	—	—	—

OEM-C175E

Mating face

Wire side

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	Fuel injector driver 1 (INJ 1)	—	W33	—	0.5	NEXUSS3-A-1	—	—	—
2	Fuel injector driver 5 (INJ 5)	—	W37	—	0.5	NEXUSS3-A-5	—	—	—
3	Fuel injector driver 4 (INJ 4)	—	W36	—	0.5	NEXUSS3-A-4	—	—	—
4	Variable camshaft timing valve 2 (VCT2)	—	W48	—	0.5	NEXUSS3-A-16	—	—	—
5	Variable camshaft timing valve 1 (VCT1)	—	W47	—	0.5	NEXUSS3-A-15	—	—	—
6	Variable camshaft timing valve 4 (VCT4)	—	W50	—	0.5	NEXUSS3-A-21	—	—	—
7	Variable camshaft timing valve 3 (VCT3)	—	W49	—	0.5	NEXUSS3-A-17	—	—	—
8	Electronic throttle control reference (ETCREF)	—	W14	—	0.5	SP-5V1-1	—	—	—
9	Throttle position positive slope (TP2-PS)	—	W57	—	0.5	NEXUSS3-C-12	—	—	—
10	Throttle position negative slope (TP1-NS)	—	W56	—	0.5	NEXUSS3-C-11	—	—	—
11	—	—	—	—	—	—	—	—	—
12	—	—	—	—	—	—	—	—	—
13	—	—	—	—	—	—	—	—	—
14	—	—	—	—	—	—	—	—	—
15	—	—	—	—	—	—	—	—	—
16	Fuel injector driver 8 (INJ 8)	—	W40	—	0.5	NEXUSS3-A-8	—	—	—
17	Buffered power supply sensors (VBPWR)	—	W12	—	0.5	SP-5V1-1	—	—	—
18	PCM power feed (VPWR, fused)	—	W1	—	0.85	SP-14V-1	—	—	—
19	—	—	—	—	—	—	—	—	—
20	Universal HEGO 1st reference (UREF-11)	—	W54	—	0.5	NEXUSS3-C-30	—	—	—
21	Universal HEGO 2nd reference (UREF-21)	—	—	—	—	—	—	—	—
22	—	—	—	—	—	—	—	—	—
23	Electronic throttle control return (ETCRTN)	—	W4	—	0.5	SP-0V-1	—	—	—
24	—	—	—	—	—	—	—	—	—
25	—	—	—	—	—	—	—	—	—
26	—	—	—	—	—	—	—	—	—
27	Intake air temperature (IAT)	—	W58	—	0.5	NEXUSS3-C-13	—	—	—
28	—	—	—	—	—	—	—	—	—
29	—	—	—	—	—	—	—	—	—
30	Engine oil level switch (EOL)	—	W61	—	0.5	NEXUSS3-C-8	—	—	—
31	Fuel injector driver 6 (INJ 6)	—	W38	—	0.5	NEXUSS3-A-6	—	—	—
32	—	—	—	—	—	—	—	—	—
33	—	—	—	—	—	—	—	—	—
34	Voltage reference engine (VREF)	—	W13	—	0.5	SP-5V1-1	—	—	—
35	Universal HEGO 1st pump current (UO2SIP-11)	—	W52	—	0.5	NEXUSS3-C-31	—	—	—
36	Universal HEGO 2nd pump current (UO2SIP-21)	—	—	—	—	—	—	—	—
37	—	—	—	—	—	—	—	—	—
38	—	—	—	—	—	—	—	—	—
39	Crankshaft sensor shield/drain	—	—	—	—	—	—	—	—
40	VR sensor return (VRSRTN)	—	W5	—	0.5	SP-0V-1	—	—	—
41	Camshaft position bank 2 (CMP2)	—	W21	—	0.5	NEXUSS3-C-6	—	—	—
42	Camshaft position bank 2 exhaust (CMP2 EX)	—	W22	—	0.5	NEXUSS3-C-7	—	—	—
43	—	—	—	—	—	—	—	—	—
44	Intake manifold monitor (IMM)	—	W55	—	0.5	NEXUSS3-C-10	—	—	—
45	Intake port deactivation valve position	—	W60	—	0.5	NEXUSS3-C-15	—	—	—
46	Fuel injector driver 3 (INJ 3)	—	W35	—	0.5	NEXUSS3-A-3	—	—	—
47	Cylinder head temperature (CHT)	—	W59	—	0.5	NEXUSS3-C-14	—	—	—
48	Oil pressure switch	—	W62	—	0.5	NEXUSS3-C-19	—	—	—
49	Signal return engine #2	—	W6	—	0.5	SP-0V-1	—	—	—
50	Universal HEGO 1st sense (UO2SN-11)	—	W53	—	0.5	NEXUSS3-C-32	—	—	—
51	Universal HEGO 2nd sense (UO2SN-21)	—	—	—	—	—	—	—	—
52	Knock sensor 1 bank 1 return (KS1−)	—	W7	—	0.5	SP-0V-1	—	—	—
53	Knock sensor 1 bank 1 signal (KS1+)	—	W23	—	0.5	NEXUSS3-C-23	—	—	—
54	VR sensor return (VRSRTN)	—	W8	—	0.5	SP-0V-1	—	—	—
55	Camshaft position bank 1 (CMP1)	—	W18	—	0.5	NEXUSS3-C-3	—	—	—
56	Camshaft position bank 1 exhaust (CMP1 EX)	—	W20	—	0.5	NEXUSS3-C-5	—	—	—
57	Oil pressure switch (MTX)	—	W63	—	0.5	NEXUSS3-C-20	—	—	—
58	—	—	—	—	—	—	—	—	—
59	Manifold heater (CE511) or IMRC charge-motion valve (CE315, 5.0L RHD)	—	—	—	—	—	—	—	—
60	IMTV monitor (CE923) or intake manifold tuning valve (CE316, 5.0L RHD)	—	—	—	—	—	—	—	—
61	Fuel injector driver 7 (INJ 7)	—	W39	—	0.5	NEXUSS3-A-7	—	—	—
62	Fuel injector driver 2 (INJ 2)	—	W34	—	0.5	NEXUSS3-A-2	—	—	—
63	—	—	—	—	—	—	—	—	—
64	—	—	—	—	—	—	—	—	—
65	—	—	—	—	—	—	—	—	—
66	—	—	—	—	—	—	—	—	—
67	Knock sensor 2 bank 1 return (KS2−)	—	W9	—	0.5	SP-0V-1	—	—	—
68	Knock sensor 2 bank 1 signal (KS2+)	—	W24	—	0.5	NEXUSS3-C-24	—	—	—
69	Crankshaft position return (CKP−)	—	W10	—	0.5	SP-0V-1	—	—	—
70	Crankshaft position (CKP+)	—	W16	—	0.5	NEXUSS3-C-1	—	—	—
71	Canister purge valve (CANP)	—	W51	—	0.5	NEXUSS3-A-22	—	—	—
72	—	—	—	—	—	—	—	—	—
73	—	—	—	—	—	—	—	—	—
74	—	—	—	—	—	—	—	—	—
75	—	—	—	—	—	—	—	—	—
76	—	—	—	—	—	—	—	—	—
77	—	—	—	—	—	—	—	—	—
78	Heater O2 post-cat 1st (HTR12)	—	W43	—	0.5	NEXUSS3-C-33	—	—	—
79	Heater O2 pre-cat 1st (HTR11)	—	W44	—	0.5	NEXUSS3-A-9	—	—	—
80	—	—	—	—	—	—	—	—	—
81	Throttle actuator control motor − (TACM−)	—	W41	—	0.5	NEXUSS3-A-20	—	—	—
82	Throttle actuator control motor + (TACM+)	—	W42	—	0.5	NEXUSS3-A-19	—	—	—
83	Heater O2 post-cat 2nd (HTR22)	—	W45	—	0.5	NEXUSS3-A-12	—	—	—
84	Heater O2 pre-cat 2nd (HTR21)	—	W46	—	0.5	NEXUSS3-A-14	—	—	—
85	—	—	—	—	—	—	—	—	—
86	—	—	—	—	—	—	—	—	—
87	Ignition coil on plug G (COP-G)	—	W25	—	0.5	NEXUSS3-A-27	—	—	—
88	Ignition coil on plug F (COP-F)	—	W26	—	0.5	NEXUSS3-A-28	—	—	—
89	Ignition coil on plug E (COP-E)	—	W27	—	0.5	NEXUSS3-A-29	—	—	—
90	Ignition coil on plug H (COP-H)	—	W28	—	0.5	NEXUSS3-A-30	—	—	—
91	—	—	—	—	—	—	—	—	—
92	Ignition coil on plug D (COP-D)	—	W29	—	0.5	NEXUSS3-A-31	—	—	—
93	Ignition coil on plug A (COP-A)	—	W30	—	0.5	NEXUSS3-A-32	—	—	—
94	Ignition coil on plug C (COP-C)	—	W31	—	0.5	NEXUSS3-A-33	—	—	—
95	Ignition coil on plug B (COP-B)	—	W32	—	0.5	NEXUSS3-A-34	—	—	—

SP-0V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W4	—	0.5	OEM-C175E-23	—	—	—
1	—	—	W5	—	0.5	OEM-C175E-40	—	—	—
1	—	—	W6	—	0.5	OEM-C175E-49	—	—	—
1	—	—	W7	—	0.5	OEM-C175E-52	—	—	—
1	—	—	W8	—	0.5	OEM-C175E-54	—	—	—
1	—	—	W9	—	0.5	OEM-C175E-67	—	—	—
1	—	—	W10	—	0.5	OEM-C175E-69	—	—	—
1	—	—	W11	—	0.5	NEXUSS3-C-26	—	—	—
1	—	—	W17	—	0.5	NEXUSS3-C-2	—	—	—
1	—	—	W19	—	0.5	NEXUSS3-C-4	—	—	—

SP-14V

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W1	—	0.85	OEM-C175E-18	—	—	—
1	—	—	W2	—	0.85	NEXUSS3-A-18	—	—	—
1	—	—	W3	—	0.85	NEXUSS3-A-25	—	—	—

SP-5V1

Cavity	Function	Signal	Wire	Colour	Gauge (mm²)	Destination	Terminal	Seal	Plug
1	—	—	W12	—	0.5	OEM-C175E-17	—	—	—
1	—	—	W13	—	0.5	OEM-C175E-34	—	—	—
1	—	—	W14	—	0.5	OEM-C175E-8	—	—	—
1	—	—	W15	—	0.5	NEXUSS3-C-25	—	—	—

Pin map

OEM point	OEM function	OEM family	Target point	Target function	Target family	Evidence
OEM-C175E-1	Fuel injector driver 1 (INJ 1)	injector_out	NEXUSS3-A-1	Injector 1	injector_out	corroborated
OEM-C175E-10	Throttle position negative slope (TP1-NS)	analog_in	NEXUSS3-C-11	AVI 2	analog_in	corroborated
OEM-C175E-16	Fuel injector driver 8 (INJ 8)	injector_out	NEXUSS3-A-8	Injector 8	injector_out	corroborated
OEM-C175E-17	Buffered power supply sensors (VBPWR)	vref	NEXUSS3-C-25	+5V	vref	corroborated
OEM-C175E-18	PCM power feed (VPWR, fused)	power_in	NEXUSS3-A-18 + NEXUSS3-A-25	+12V switched input + +12V switched input	power_in	corroborated
OEM-C175E-2	Fuel injector driver 5 (INJ 5)	injector_out	NEXUSS3-A-5	Injector 5	injector_out	corroborated
OEM-C175E-20	Universal HEGO 1st reference (UREF-11)	wb_vgnd	NEXUSS3-C-30	WBI 1 Input	wb_vgnd	corroborated
OEM-C175E-21	Universal HEGO 2nd reference (UREF-21)	wb_vgnd	—	—	—	corroborated
OEM-C175E-23	Electronic throttle control return (ETCRTN)	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-27	Intake air temperature (IAT)	temp_in	NEXUSS3-C-13	AVI 4	analog_in	corroborated
OEM-C175E-3	Fuel injector driver 4 (INJ 4)	injector_out	NEXUSS3-A-4	Injector 4	injector_out	corroborated
OEM-C175E-30	Engine oil level switch (EOL)	digital_in	NEXUSS3-C-8	SPI 4	digital_in	corroborated
OEM-C175E-31	Fuel injector driver 6 (INJ 6)	injector_out	NEXUSS3-A-6	Injector 6	injector_out	corroborated
OEM-C175E-34	Voltage reference engine (VREF)	vref	NEXUSS3-C-25	+5V	vref	corroborated
OEM-C175E-35	Universal HEGO 1st pump current (UO2SIP-11)	wb_ip	NEXUSS3-C-31	WBI 1 Pump	wb_ip	corroborated
OEM-C175E-36	Universal HEGO 2nd pump current (UO2SIP-21)	wb_ip	—	—	—	corroborated
OEM-C175E-39	Crankshaft sensor shield/drain	shield	—	—	—	corroborated
OEM-C175E-4	Variable camshaft timing valve 2 (VCT2)	low_side_out	NEXUSS3-A-16	DPO 5	low_side_out	corroborated
OEM-C175E-40	VR sensor return (VRSRTN)	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-41	Camshaft position bank 2 (CMP2)	trigger_in	NEXUSS3-C-6	SPI 2	digital_in	corroborated
OEM-C175E-42	Camshaft position bank 2 exhaust (CMP2 EX)	trigger_in	NEXUSS3-C-7	SPI 3	digital_in	corroborated
OEM-C175E-44	Intake manifold monitor (IMM)	analog_in	NEXUSS3-C-10	AVI 1	analog_in	corroborated
OEM-C175E-45	Intake port deactivation valve position	analog_in	NEXUSS3-C-15	AVI 6	analog_in	corroborated
OEM-C175E-46	Fuel injector driver 3 (INJ 3)	injector_out	NEXUSS3-A-3	Injector 3	injector_out	corroborated
OEM-C175E-47	Cylinder head temperature (CHT)	temp_in	NEXUSS3-C-14	AVI 5	analog_in	corroborated
OEM-C175E-48	Oil pressure switch	digital_in	NEXUSS3-C-19	SPI 5	digital_in	corroborated
OEM-C175E-49	Signal return engine #2	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-5	Variable camshaft timing valve 1 (VCT1)	low_side_out	NEXUSS3-A-15	DPO 4	low_side_out	corroborated
OEM-C175E-50	Universal HEGO 1st sense (UO2SN-11)	wb_vs	NEXUSS3-C-32	WBI 1 Nernst	wb_vs	corroborated
OEM-C175E-51	Universal HEGO 2nd sense (UO2SN-21)	wb_vs	—	—	—	corroborated
OEM-C175E-52	Knock sensor 1 bank 1 return (KS1−)	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-53	Knock sensor 1 bank 1 signal (KS1+)	knock_in	NEXUSS3-C-23	Knock 1	knock_in	corroborated
OEM-C175E-54	VR sensor return (VRSRTN)	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-55	Camshaft position bank 1 (CMP1)	trigger_in	NEXUSS3-C-3	Home +	trigger_in	corroborated
OEM-C175E-56	Camshaft position bank 1 exhaust (CMP1 EX)	trigger_in	NEXUSS3-C-5	SPI 1	digital_in	corroborated
OEM-C175E-57	Oil pressure switch (MTX)	digital_in	NEXUSS3-C-20	SPI 6	digital_in	corroborated
OEM-C175E-59	Manifold heater (CE511) or IMRC charge-motion valve (CE315, 5.0L RHD)	—	—	—	—	corroborated
OEM-C175E-6	Variable camshaft timing valve 4 (VCT4)	low_side_out	NEXUSS3-A-21	HBO 3	hbridge_out	corroborated
OEM-C175E-60	IMTV monitor (CE923) or intake manifold tuning valve (CE316, 5.0L RHD)	—	—	—	—	corroborated
OEM-C175E-61	Fuel injector driver 7 (INJ 7)	injector_out	NEXUSS3-A-7	Injector 7	injector_out	corroborated
OEM-C175E-62	Fuel injector driver 2 (INJ 2)	injector_out	NEXUSS3-A-2	Injector 2	injector_out	corroborated
OEM-C175E-67	Knock sensor 2 bank 1 return (KS2−)	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-68	Knock sensor 2 bank 1 signal (KS2+)	knock_in	NEXUSS3-C-24	Knock 2	knock_in	corroborated
OEM-C175E-69	Crankshaft position return (CKP−)	sensor_ground	NEXUSS3-C-2 + NEXUSS3-C-26 + NEXUSS3-C-4	Trigger - + Signal ground + Home -	sensor_ground + trigger_in	corroborated
OEM-C175E-7	Variable camshaft timing valve 3 (VCT3)	low_side_out	NEXUSS3-A-17	DPO 6	low_side_out	corroborated
OEM-C175E-70	Crankshaft position (CKP+)	trigger_in	NEXUSS3-C-1	Trigger +	trigger_in	corroborated
OEM-C175E-71	Canister purge valve (CANP)	low_side_out	NEXUSS3-A-22	HBO 4	hbridge_out	corroborated
OEM-C175E-78	Heater O2 post-cat 1st (HTR12)	low_side_out	NEXUSS3-C-33	WBI 1 Heater -	low_side_out	corroborated
OEM-C175E-79	Heater O2 pre-cat 1st (HTR11)	low_side_out	NEXUSS3-A-9	DPO 1	low_side_out	corroborated
OEM-C175E-8	Electronic throttle control reference (ETCREF)	vref	NEXUSS3-C-25	+5V	vref	corroborated
OEM-C175E-81	Throttle actuator control motor − (TACM−)	hbridge_out	NEXUSS3-A-20	HBO 2	hbridge_out	corroborated
OEM-C175E-82	Throttle actuator control motor + (TACM+)	hbridge_out	NEXUSS3-A-19	HBO 1	hbridge_out	corroborated
OEM-C175E-83	Heater O2 post-cat 2nd (HTR22)	low_side_out	NEXUSS3-A-12	DPO 2	low_side_out	corroborated
OEM-C175E-84	Heater O2 pre-cat 2nd (HTR21)	low_side_out	NEXUSS3-A-14	DPO 3	low_side_out	corroborated
OEM-C175E-87	Ignition coil on plug G (COP-G)	ignition_out	NEXUSS3-A-27	Ignition 1	ignition_out	corroborated
OEM-C175E-88	Ignition coil on plug F (COP-F)	ignition_out	NEXUSS3-A-28	Ignition 2	ignition_out	corroborated
OEM-C175E-89	Ignition coil on plug E (COP-E)	ignition_out	NEXUSS3-A-29	Ignition 3	ignition_out	corroborated
OEM-C175E-9	Throttle position positive slope (TP2-PS)	analog_in	NEXUSS3-C-12	AVI 3	analog_in	corroborated
OEM-C175E-90	Ignition coil on plug H (COP-H)	ignition_out	NEXUSS3-A-30	Ignition 4	ignition_out	corroborated
OEM-C175E-92	Ignition coil on plug D (COP-D)	ignition_out	NEXUSS3-A-31	Ignition 5	ignition_out	corroborated
OEM-C175E-93	Ignition coil on plug A (COP-A)	ignition_out	NEXUSS3-A-32	Ignition 6	ignition_out	corroborated
OEM-C175E-94	Ignition coil on plug C (COP-C)	ignition_out	NEXUSS3-A-33	Ignition 7	ignition_out	corroborated
OEM-C175E-95	Ignition coil on plug B (COP-B)	ignition_out	NEXUSS3-A-34	Ignition 8	ignition_out	corroborated

Cut list

Wire	From	To	Gauge (mm²)	Length	Signal	Ident
W1	OEM-C175E-18	SP-14V-1	0.85	no route	PCM power feed (VPWR, fused)	—
W2	SP-14V-1	NEXUSS3-A-18	0.85	no route	+12V switched input	—
W3	SP-14V-1	NEXUSS3-A-25	0.85	no route	+12V switched input	—
W4	OEM-C175E-23	SP-0V-1	0.5	no route	Electronic throttle control return (ETCRTN)	—
W5	OEM-C175E-40	SP-0V-1	0.5	no route	VR sensor return (VRSRTN)	—
W6	OEM-C175E-49	SP-0V-1	0.5	no route	Signal return engine #2	—
W7	OEM-C175E-52	SP-0V-1	0.5	no route	Knock sensor 1 bank 1 return (KS1−)	—
W8	OEM-C175E-54	SP-0V-1	0.5	no route	VR sensor return (VRSRTN)	—
W9	OEM-C175E-67	SP-0V-1	0.5	no route	Knock sensor 2 bank 1 return (KS2−)	—
W10	OEM-C175E-69	SP-0V-1	0.5	no route	Crankshaft position return (CKP−)	—
W11	SP-0V-1	NEXUSS3-C-26	0.5	no route	Signal ground	—
W12	OEM-C175E-17	SP-5V1-1	0.5	no route	Buffered power supply sensors (VBPWR)	—
W13	OEM-C175E-34	SP-5V1-1	0.5	no route	Voltage reference engine (VREF)	—
W14	OEM-C175E-8	SP-5V1-1	0.5	no route	Electronic throttle control reference (ETCREF)	—
W15	SP-5V1-1	NEXUSS3-C-25	0.5	no route	+5V	—
W16	OEM-C175E-70	NEXUSS3-C-1	0.5	no route	Crankshaft position (CKP+)	—
W17	SP-0V-1	NEXUSS3-C-2	0.5	no route	Trigger -	—
W18	OEM-C175E-55	NEXUSS3-C-3	0.5	no route	Camshaft position bank 1 (CMP1)	—
W19	SP-0V-1	NEXUSS3-C-4	0.5	no route	Home -	—
W20	OEM-C175E-56	NEXUSS3-C-5	0.5	no route	Camshaft position bank 1 exhaust (CMP1 EX)	—
W21	OEM-C175E-41	NEXUSS3-C-6	0.5	no route	Camshaft position bank 2 (CMP2)	—
W22	OEM-C175E-42	NEXUSS3-C-7	0.5	no route	Camshaft position bank 2 exhaust (CMP2 EX)	—
W23	OEM-C175E-53	NEXUSS3-C-23	0.5	no route	Knock sensor 1 bank 1 signal (KS1+)	—
W24	OEM-C175E-68	NEXUSS3-C-24	0.5	no route	Knock sensor 2 bank 1 signal (KS2+)	—
W25	OEM-C175E-87	NEXUSS3-A-27	0.5	no route	Ignition coil on plug G (COP-G)	—
W26	OEM-C175E-88	NEXUSS3-A-28	0.5	no route	Ignition coil on plug F (COP-F)	—
W27	OEM-C175E-89	NEXUSS3-A-29	0.5	no route	Ignition coil on plug E (COP-E)	—
W28	OEM-C175E-90	NEXUSS3-A-30	0.5	no route	Ignition coil on plug H (COP-H)	—
W29	OEM-C175E-92	NEXUSS3-A-31	0.5	no route	Ignition coil on plug D (COP-D)	—
W30	OEM-C175E-93	NEXUSS3-A-32	0.5	no route	Ignition coil on plug A (COP-A)	—
W31	OEM-C175E-94	NEXUSS3-A-33	0.5	no route	Ignition coil on plug C (COP-C)	—
W32	OEM-C175E-95	NEXUSS3-A-34	0.5	no route	Ignition coil on plug B (COP-B)	—
W33	OEM-C175E-1	NEXUSS3-A-1	0.5	no route	Fuel injector driver 1 (INJ 1)	—
W34	OEM-C175E-62	NEXUSS3-A-2	0.5	no route	Fuel injector driver 2 (INJ 2)	—
W35	OEM-C175E-46	NEXUSS3-A-3	0.5	no route	Fuel injector driver 3 (INJ 3)	—
W36	OEM-C175E-3	NEXUSS3-A-4	0.5	no route	Fuel injector driver 4 (INJ 4)	—
W37	OEM-C175E-2	NEXUSS3-A-5	0.5	no route	Fuel injector driver 5 (INJ 5)	—
W38	OEM-C175E-31	NEXUSS3-A-6	0.5	no route	Fuel injector driver 6 (INJ 6)	—
W39	OEM-C175E-61	NEXUSS3-A-7	0.5	no route	Fuel injector driver 7 (INJ 7)	—
W40	OEM-C175E-16	NEXUSS3-A-8	0.5	no route	Fuel injector driver 8 (INJ 8)	—
W41	OEM-C175E-81	NEXUSS3-A-20	0.5	no route	Throttle actuator control motor − (TACM−)	—
W42	OEM-C175E-82	NEXUSS3-A-19	0.5	no route	Throttle actuator control motor + (TACM+)	—
W43	OEM-C175E-78	NEXUSS3-C-33	0.5	no route	Heater O2 post-cat 1st (HTR12)	—
W44	OEM-C175E-79	NEXUSS3-A-9	0.5	no route	Heater O2 pre-cat 1st (HTR11)	—
W45	OEM-C175E-83	NEXUSS3-A-12	0.5	no route	Heater O2 post-cat 2nd (HTR22)	—
W46	OEM-C175E-84	NEXUSS3-A-14	0.5	no route	Heater O2 pre-cat 2nd (HTR21)	—
W47	OEM-C175E-5	NEXUSS3-A-15	0.5	no route	Variable camshaft timing valve 1 (VCT1)	—
W48	OEM-C175E-4	NEXUSS3-A-16	0.5	no route	Variable camshaft timing valve 2 (VCT2)	—
W49	OEM-C175E-7	NEXUSS3-A-17	0.5	no route	Variable camshaft timing valve 3 (VCT3)	—
W50	OEM-C175E-6	NEXUSS3-A-21	0.5	no route	Variable camshaft timing valve 4 (VCT4)	—
W51	OEM-C175E-71	NEXUSS3-A-22	0.5	no route	Canister purge valve (CANP)	—
W52	OEM-C175E-35	NEXUSS3-C-31	0.5	no route	Universal HEGO 1st pump current (UO2SIP-11)	—
W53	OEM-C175E-50	NEXUSS3-C-32	0.5	no route	Universal HEGO 1st sense (UO2SN-11)	—
W54	OEM-C175E-20	NEXUSS3-C-30	0.5	no route	Universal HEGO 1st reference (UREF-11)	—
W55	OEM-C175E-44	NEXUSS3-C-10	0.5	no route	Intake manifold monitor (IMM)	—
W56	OEM-C175E-10	NEXUSS3-C-11	0.5	no route	Throttle position negative slope (TP1-NS)	—
W57	OEM-C175E-9	NEXUSS3-C-12	0.5	no route	Throttle position positive slope (TP2-PS)	—
W58	OEM-C175E-27	NEXUSS3-C-13	0.5	no route	Intake air temperature (IAT)	—
W59	OEM-C175E-47	NEXUSS3-C-14	0.5	no route	Cylinder head temperature (CHT)	—
W60	OEM-C175E-45	NEXUSS3-C-15	0.5	no route	Intake port deactivation valve position	—
W61	OEM-C175E-30	NEXUSS3-C-8	0.5	no route	Engine oil level switch (EOL)	—
W62	OEM-C175E-48	NEXUSS3-C-19	0.5	no route	Oil pressure switch	—
W63	OEM-C175E-57	NEXUSS3-C-20	0.5	no route	Oil pressure switch (MTX)	—

Bill of materials

Category	Part number	Manufacturer	Description	Qty	Unit
connector	COYOTE-PCM-A	—	2011–14 Mustang GT PCM 70-way connector C175E (housing P/N unknown)	1.000	ea

ECU setup sheet

Role	Engine ref	Engine signal	Sensor	ECU point	ECU function	ECU class	Setup flag
No configured channels.

Findings

Open (15)

Severity	Code	Subject	Message
error	DBW_MOTOR_DRIVE	throttle motor	This car has an electronic throttle, but no throttle-motor pins were found in the harness. Wire the motor to an H-bridge on the ECU, or switch to the cable-conversion variant.
error	DBW_SENSOR_INPUT	pedal	Only 0 pedal track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them.
error	DBW_SENSOR_INPUT	tps	Only 0 throttle-position track(s) found. An electronic throttle needs two (main and sub) so the ECU can cross-check them.
error	PHYS_REQUIRED_OPEN	NEXUSS3-A-10	NEXUSS3-A-10 "Battery ground" is required but not wired.
error	PHYS_REQUIRED_OPEN	NEXUSS3-A-11	NEXUSS3-A-11 "Battery ground" is required but not wired.
warn	DATASET_GAP	Mustang GT PCM C175E	32 of 95 cavities on Mustang GT PCM C175E have no pin data (11,12,13,14,15,19,22,24,25,26,28,29,32,33,37,38,43,58,63,64,65,66,72,73,74,75,76,77,80,85,86,91). Anything there is invisible to these checks.
warn	NET_FAMILY	OEM-C175E-41 ↔ NEXUSS3-C-6	OEM-C175E-41 "Camshaft position bank 2 (CMP2)" [trigger_in] is wired to NEXUSS3-C-6 "SPI 2" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
warn	NET_FAMILY	OEM-C175E-42 ↔ NEXUSS3-C-7	OEM-C175E-42 "Camshaft position bank 2 exhaust (CMP2 EX)" [trigger_in] is wired to NEXUSS3-C-7 "SPI 3" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
warn	NET_FAMILY	OEM-C175E-56 ↔ NEXUSS3-C-5	OEM-C175E-56 "Camshaft position bank 1 exhaust (CMP1 EX)" [trigger_in] is wired to NEXUSS3-C-5 "SPI 1" [digital_in]. Hall-type cam/speed signals can use a digital input if it handles the frequency; VR signals cannot.
warn	NET_FAMILY	OEM-C175E-6 ↔ NEXUSS3-A-21	OEM-C175E-6 "Variable camshaft timing valve 4 (VCT4)" [low_side_out] is wired to NEXUSS3-A-21 "HBO 3" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way.
warn	NET_FAMILY	OEM-C175E-71 ↔ NEXUSS3-A-22	OEM-C175E-71 "Canister purge valve (CANP)" [low_side_out] is wired to NEXUSS3-A-22 "HBO 4" [hbridge_out]. A half-bridge can act as a low-side switch only if configured that way.
info	NET_FAMILY	OEM-C175E-27 ↔ NEXUSS3-C-13	OEM-C175E-27 "Intake air temperature (IAT)" [temp_in] is wired to NEXUSS3-C-13 "AVI 4" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
info	NET_FAMILY	OEM-C175E-47 ↔ NEXUSS3-C-14	OEM-C175E-47 "Cylinder head temperature (CHT)" [temp_in] is wired to NEXUSS3-C-14 "AVI 5" [analog_in]. Thermistor on a plain analog input needs a pull-up; check the channel can enable one.
info	NET_FAMILY	OEM-C175E-69 ↔ NEXUSS3-C-2	OEM-C175E-69 "Crankshaft position return (CKP−)" [sensor_ground] is wired to NEXUSS3-C-2 "Trigger -" [trigger_in]. Trigger return tied to sensor/trigger ground: correct for single-ended trigger inputs.
info	UNMAPPED	OEM	6 optional OEM pins are not mapped: OEM-C175E-21 Universal HEGO 2nd reference (UREF-21); OEM-C175E-36 Universal HEGO 2nd pump current (UO2SIP-21); OEM-C175E-39 Crankshaft sensor shield/drain; OEM-C175E-51 Universal HEGO 2nd sense (UO2SN-21); OEM-C175E-59 Manifold heater (CE511) or IMRC charge-motion valve (CE315, 5.0L RHD); OEM-C175E-60 IMTV monitor (CE923) or intake manifold tuning valve (CE316, 5.0L RHD)

Accepted (0)

Code	Subject	Reason	By

Notes

Fit check: unconfirmed. Confirm these before building: - Needs CAN (ford_mustang_2011_14); not documented for this ECU - Trigger pattern for Ford Coyote not found in the ECU's docs (No public Coyote trigger pattern; Nexus R5 V8 harness supports Ford V8 at harness level only) - This car has PATS immobilizer; needs a delete/bypass Auto-mapped by auto_map() from the library pin data on 2026-10-06. Review every wire against both manuals before building. Open items: - NEXUSS3-A 10: Battery ground: required by Haltech Nexus S3 but no stock pin feeds it; wire by hand - NEXUSS3-A 11: Battery ground: required by Haltech Nexus S3 but no stock pin feeds it; wire by hand Not wired: - OEM-C175E 39: Crankshaft sensor shield/drain: no shield pin on Haltech Nexus S3 - OEM-C175E 36: Universal HEGO 2nd pump current (UO2SIP-21): no free wb_ip on Haltech Nexus S3 - OEM-C175E 51: Universal HEGO 2nd sense (UO2SN-21): no free wb_vs on Haltech Nexus S3 - OEM-C175E 21: Universal HEGO 2nd reference (UREF-21): no free wb_vgnd on Haltech Nexus S3 - OEM-C175E 59: Manifold heater (CE511) or IMRC charge-motion valve (CE315, 5.0L RHD): not classified in the library; wire by hand - OEM-C175E 60: IMTV monitor (CE923) or intake manifold tuning valve (CE316, 5.0L RHD): not classified in the library; wire by hand - NEXUSS3-A 13: Ignition switch input: not fed (the stock ECU has no ignition-sense pin); feed it from a switched-ignition source

Sources

Reliability	Kind	Title	URL	Archive	Captured	SHA-256
4	vendor_doc	Haltech: Nexus S3 Plug 'n' Play adapter QSG (Subaru WRX/STI ADM, HT-186300) — ECU Connector A & C pinout	https://www.haltech.com/product/ht-186300-nexus-s3-plug-n-play-adapter-harness/	archive	2026-10-05	3cab7cd337c2
4	vendor_doc	Haltech: Nexus S3/S2 ECU Overview (QSG) — specifications	https://store.haltech.com/product/ht-213000-nexus-s3-ecu-only/	archive	2026-10-05	388299668207
3	community_copy	iihs.net: 2011 Mustang factory Wiring Diagrams (Cell 24 Electronic Engine Controls, 5.0L)	https://iihs.net/fsm/?d=711	—	—	—
2	community_copy	rusEFI OEM-Docs: Coyote C175E pinout (Pin/Circuit/Gauge/Circuit Function/Qualifier)	https://raw.githubusercontent.com/rusefi/rusefi_documentation/master/OEM-Docs/Ford/Coyote-175e-pinout-B.png	—	—	—