Author Topic: COP Wiring (Read 2483 times)

ClayW · « **on:** May 19, 2011, 09:21:03 PM »

Do I have this COP kit wired properly? Is there any way to tell for sure?

I installed this engine with a new (to me) wiring harness and I need to know how to know which plug goes to each coil. I think I have it right, but I need confirmation.

Also, there are two eyes in the engine harness next to the branch-off for the coils and the 02 sensor. Are they both grounds?

Thanks in advance.

DesktopDave · « **Reply #1 on:** May 19, 2011, 09:33:12 PM »

To be totally sure, I'd do a continuity test to the pins on the DME. The right ones are listed here somewhere.

I'm not totally sure about the eyelets, I'll take a look & let you know. If they're brown they probably go over to the lug on the wheel housing.

monty23psk · « **Reply #2 on:** May 19, 2011, 10:38:57 PM »

One eyelet is a ground right to the empty space next to firewall where the older e30s have the battery. Not sure about the second one. I would have to check mine.

ClayW · « **Reply #3 on:** May 20, 2011, 07:51:45 AM »

Quote from: DesktopDave;103907

To be totally sure, I'd do a continuity test to the pins on the DME. The right ones are listed here somewhere.

I'm not totally sure about the eyelets, I'll take a look & let you know. If they're brown they probably go over to the lug on the wheel housing.

Can someone please direct me to a diagram or something that shows the pins to test to make sure that I have the right plugs on the right coils?

vpilarry · « **Reply #4 on:** May 20, 2011, 12:09:57 PM »

I assume you removed the harness from the original coil pack without marking them and now you don't know which harness leg goes to which coil. I think the only recourse is to check continiuty of the black wire back to the ECM.

Coil 1 (front) connects to pin 25
2 to pin 52
3 to pin 24
4 to pin 51