I have a 1985 325e that runs shitty and smokes more than a big rig, and a 1990 325i convertible. I want to put the engine from the convertible into the "E" how can I get the 2 wiring harnesses to meet
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HELP!! m20b25 into 325e
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Depending on the month your eta was made, you will either have a square plug for the engine harness near the strut tower, or a round connector near the fuse box. If you have round, it's pretty much plug and play aside from pin #20 (this was changed from no wire, to ground, then to power pending the donor car build date). If you have the square plug in your car, you will need to chop the end off your eta harness and adapt it.
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Take the whole lump from your vert (engine, engine harness and ECU) and slap it in the eta. Just make sure if the vert engine harness and your eta chassis both have the round plugs, be aware of the dreaded pin #20, or you will fry your body harness and let all the magic smoke out.
Not sure Melon caught that you have a complete donor car.
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