I know theres lots of threads out there, but I've searched and am having trouble. Basically I'm swapping in a m20b25 from an 89 325is, into my 87 325es. I have the wiring harness and ecu from the 89 b25, but it looks like the c101 was cut off, so if anyone knows the pinouts for both the c101 pinouts for both of those harnesses id be extremely grateful. the 87 b27 harness also has a c104 in the dash, and what I've found is black=tach green= Ignition and yellow=?? (fuel?) Thankyou!
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Last edited by mhykol; 05-10-2015, 12:58 PM. -
ps
forgot to mention, the 89 b25 was out of an automatic, if that changes things drasticallyLast edited by mhykol; 05-10-2015, 12:57 PM. -
Yellow is the other part of the tach, unless you ment econ. Dont worry about green. As far as c101 you need to look at an etm for those model years and connect a to b. Its only like 12 critical wires if that.1988 325is alpine
1989 325is zinno RIP
1992 325ic alpine
1986 325e cirrusblauComment
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