View Full Version : Anyone have the wiring diagram for the IRCM

12-28-2007, 05:28 AM
Im looking specificly the a color to pin diagram for the connector. I had to swap all the pins to a new connector since I smashed mine in a wreck and I wanted to make sure I had everything in the right place.

Duffy Floyd
12-28-2007, 01:59 PM
What year car? There are three different "versions" of the IRCM used on SC's.

12-28-2007, 03:43 PM
Yeah, guess that would help. Its a 1990. I was hoping to find a color match to each pin from a connector view like the newer tech manuals do. Im not impressed with the Helm shop manual I have for my cougar.

12-29-2007, 07:23 PM
I have an 89 and 90 both IRCM's have the letter L on label. Pin wiring taken from 90 EVTM as follows:
1. Brn/yel cooling fan 13. Red/ lt. grn start or run power
2. Brn/yel cooling fan 14. Tan/ora lo spd fan sig. from EEC
3. Blk/ora power feed 15. Black ground
4. Blk/ora power feed 16. Wht/pk a/c clutch coil ground
5. NOT USED 17. Pink hi speed fan sig. from EEC
6. Brn/ora cooling fan 18. NOT USED
7. Brn/ora cooling fan 19. NOT USED
8. Yellow power feed 20. NOT USED
9. NOT USED 21. Pk/ ltblu a/c clutch cycle sw.
10. NOT USED 22. Red wide open throttlle cut-out
from EEC
11. NOT USED 23. Blk/yel a/c clutch coil feed
12. Blk/yel power 24. Red power relay to EEC module

12-30-2007, 10:35 AM
Thanks alot! EVTM? Is that a manual on CD or something? I really don't like the paper copy I have right now, and its the original shop manual. Usually, its the other way around. I would normally prefer the paper copy.

12-30-2007, 11:11 AM
There are a couple manuals from Ford. The Service Manual and the EVTM, Electrical and Vacuum Troubleshooting Manual.