Title says it 84 325e 93 m50. In all the m50 swap guides I read it says that the green/white wire goes to my diagnostic port. I'm having a few issues and want to pull codes but I'm not convinced my car even came with the diagnostic port as I don't have the green/white wire. How do I go about hooking this up? What am I missing? Been chasing a very slight misfire have replaced/changed out maf icv plugs valve cover gasket tps. Smoke tested the car will good results. Compression test with good results. Most of these parts needed replaced anyways so I had no trouble putting the money in. Last thing I'm guessing is an 02 sensor? Maybe cam/crank sensors but I'm really trying to find out if it's throwing codes and have no idea... Anyone have any ideas for me?
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