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C115 Explorer harness wiring

Boss Hugg

Contributor
Bronco Guru
Joined
Jun 8, 2010
Messages
2,161
I'm looking for a pinout/description of the C115 connector for the 1999 explorer harness. I have the pin out with PIN numbers, colors, and circuit numbers, but not sure where they go. I've found the info for a 1996, but it's slightly different from what I've got. I'm Getting ready to put the motor/tranny on the test stand to fire it up, and I need to know which wires are going to go where when it's actually in the bronco.

BTW, I have the quarterhorse installed to trick the PATS signal...
 
Last edited:

goldstar

New Member
Joined
Sep 28, 2015
Messages
9
Loc.
ronkonkoma
pin out

I cant get the pic to upload but here are the pins:

1. red/green -power to ign coils
2. brown/yellow- tach signal
3. pink/lt blue- OBD2 port
4. red/green- brake light switch
5. green/yellow- fuel pump montior
6. pink/green- check eng light
7. grey/black- vss sender
8. yellow- mem to PCM(always hot)
9. red- PCM relay
10. yellow/white- fuel lvl from cluster
11. tan/orange- OBD2 port
12. tan/white - overdrive switch
13. empty
14. purple/white - evap canister
15. ltblue/orange - ground for fuel pump
16. red/white - coolant temp sender
17. pink/red- fuel tank pressure sensor
18. grey/red - signal return o2
19. brown/white - '5' volt ref for fuel pump
20. empty
21. black/pink - rev light power out
22. purple- OBD2 port
23. empty
24. pink - start signal for ign from trans
25. purple/orange - rev power in
26. green/white- oil pressure sender
27. empty
28. empty
29. empty
30. pink/yellow - ac compress relay
31. tan/red - s terminal on starter/ neutral safety out
32. empty
33. empty
34. black/white - ground for PCM
35. black/yellow- AC pressure switch ground
36. blue/orange - o2 heater circuits
37. purple- AC hot
38. empty
39. green/black - purge valve
40. white/green - overdrive off light
41. ltgreen/red - alt energizer charge light
42. yellow/white - alt sense wire

for better results do a search for EFIGuy and there is a video
 
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Boss Hugg

Boss Hugg

Contributor
Bronco Guru
Joined
Jun 8, 2010
Messages
2,161
Thank you sir. That gets me a pretty good start on it. More questions to come, no doubt.
 
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Boss Hugg

Boss Hugg

Contributor
Bronco Guru
Joined
Jun 8, 2010
Messages
2,161
Update: I bought a factory 2000 Explorer wiring diagram book. If someone has questions I can certainly try to help. Just send me a pm.
 
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