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Need lighting wire diagram GMC W4/ Isuzu NPR
Posted to HD/Fleet Forum on 4/2/2018 1 Reply

I have a 1997 GMC Forward W4/Isuzu NPR, I can't seem to find the proper wire diagram for this vehicle. I have been using one for a Trooper, it seems to be similar but I need the proper color codes. I need the turn signal/hazard and tail light diagrams. Thank ... Login to read more.

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