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Smallblock454 · 04-25-2016, 07:36 PM

Hello tada,

i have a wiring diagram for the 99 986 dme. It's too big to post it here.

Looks like every ground point for each fuel injector runs seperately, but has an internal node.

The ignition has 2 ground points on the DME. But they are connected. The wiring loom runs to one central ground node, but there is a wiring running to each. Maybe a broken wiring loom cable? Did you recheck the ground connection on each ignition coil?

Don't know DME outs for one bank could be shot all at once. In general each out has his own power transistor.

If you pm me your e-mail address, i can send you the wiring diagram.

Regards, Markus

04-25-2016, 07:36 PM	#10
Smallblock454 Registered User Join Date: Jun 2014 Location: LB, Germany Posts: 1,515	Hello tada, i have a wiring diagram for the 99 986 dme. It's too big to post it here. Looks like every ground point for each fuel injector runs seperately, but has an internal node. The ignition has 2 ground points on the DME. But they are connected. The wiring loom runs to one central ground node, but there is a wiring running to each. Maybe a broken wiring loom cable? Did you recheck the ground connection on each ignition coil? Don't know DME outs for one bank could be shot all at once. In general each out has his own power transistor. If you pm me your e-mail address, i can send you the wiring diagram. Regards, Markus Last edited by Smallblock454; 04-25-2016 at 08:05 PM.