I started with automatic e36 and put 2.5 m50 manual in and had issues with reverse lights and at the beginning it wouldn't start because ecu was saying it was in gear.bit of fiddling with wires fixed the starting bit but I still have the reverse lights issue.reverse lights always on,i did sort it however a while back but have since undone the wiring to fit parts and cant remember how I done it..must have a look one of the days.good luck with your swap,Originally Posted by pauliE3X