| Running a new ground to the ECM [message #233945] |
Wed, 25 December 2013 00:58  |
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Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
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I'm slaying the sitting-coach-lot-of-work-done-gremlins one at a time, and I'm trying to work my way through some electrical issues. I'm pretty sure I have a/some bad ground(s) causing 12 volts on a number of ECM sensor ground pins that should be reading 0 volts, most gauges not working, etc.
I read a post Ken Burton wrote some time ago about running a new ground to the ECM while trying to help a GMCer limp home from a rally. How exactly is that done? Do I just select the wires which are supposed to be ground just before the ECM connectors and splice on a wire to each one running to the engine block? Is there another way to do it, maybe a single wire? I don't want to start hacking into the harness if it's not really necessary.
thanks
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
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