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Old 05-10-2015, 09:03 AM   #1
evandael
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who in pittsburgh knows the harness in and out?

long story short i've got an 86 sedan harness going into an 87 coupe

i've got it mostly laid out but am having trouble with the underdash wiring. specifically i cannot find the brake light switch connector, and i feel like i'm missing the under dash wiring subharness.


yes i've checked the ETMs. i'm in a rut. if you can help me, i'll pay you; beer, pizza, actual money, whatever.
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Old 05-10-2015, 10:24 AM   #2
nomansland92
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I wonder how much that harness would be different to my 88? Might be able to complare them and figure something out
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Old 05-11-2015, 02:16 PM   #3
ron1999
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only tip i can give you is download the exact electrical schemes of the donor model and the recipient model and make a translation table for each wire.

you'll end up with 90% identical, but those 10% change would kill you for finding them out with try-and-error.

the good thing is that both cars are pre-facelift models, so its going to be pretty close.

this was my strategy when adopted the E36 M42 harness into my E30 M40 car
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Old 05-12-2015, 05:34 PM   #4
John in VA
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Here's the factory repair manual, if it helps:
https://www.bmwtechinfo.com/repair/main/561en/index.htm
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