Are you using the factory Electrical Troubleshooting Manual or the service manual (assuming there are separate manuals for your application; there are for the Trooper I've got)? The ETM has all the wiring information you'll ever need, information the service manual glosses over or omits entirely.


1988 Isuzu Trooper LS
2.8l Isuzu 4JB1-TC intercooled turbo diesel
www.dieseltrooper.blogspot.com