E30 M3 wiring

[Jason89i]

Jason, so this M3 looks like it's the same as yours, and 18 is the unloader lead. Should I wire it to E36 pin 15?...

if your 88m3 has a pin15 blk/grn, then not the same wiring as mine. m3's had different wiring in 87. not sure when the changeover date was, but it was after 3/87 and before 12/87. main difference was the "start" request signal and the body electronice unloading relays.

are you asking about the e30m3 c101pin15 blk/yel? "START" request from ignition switch to starter pin 50 / diag. conn. / motronic

start request signal does not go to the e36pin15 blk/grn body electronics unloader relays.

1990 e30 On c101
#6 - Green \ yellow stripe - do I need to connect this to anything
#15 - Black \ green stripe - whats this for and do i need to connect it to anything on the e36 harness
#16 - White \ Black stripe - sames as #15
#20 - Red \ yellow stripe - Sames as # 15 and #16

no pinout printed on the etm.

90m3c101
pin6 grn/yel - hint.....check the earlier post with attached etm diagram. evap power.
pin15 blk/grn hint.....check the start system and k5/k7 body electornic unloader relays.
pin16 wht/blk......this one was a little trickey to follow....but its part of the srs system that goes to the diag. connector.
pin20 red/yl......mike is right, hint, check the abs system.

hope this helps,
cheers, jason