M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Electrical => Topic started by: mwilderl on August 06, 2010, 10:50:53 PM

Title: Ignition Order
Post by: mwilderl on August 06, 2010, 10:50:53 PM

I've just installed an m42 into my e21 320is and am wonder how to determine which ignition wires from the wiring harness correspond to the correct cylinders. I can't seem to find anything about which is which and feel like there is some random thing I'm overlooking. Thanks for any help!

Title: Ignition Order
Post by: DesktopDave on August 06, 2010, 11:13:15 PM

My e30 m42 doesn't have different colors on the wiring harness.  If you pulled the wiring from an e36 it'll have color coded wires, same DME pins.  There's a helpful post here (http://www.m42club.com/forums/showthread.php?t=1622).

Trace the black wires from the DME plug:
Coil #1: 25
Coil #2: 52
Coil #3: 24
Coil #4: 51

Title: Ignition Order
Post by: mwilderl on August 07, 2010, 01:04:32 AM

It's the e30 harness, although i have an e36 one laying around. Thanks a lot for the info!