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Click on image for the lowdown. 
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| | | Forums66 Topics128,037 Posts1,055,469 Members48,424 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: May 2002 Posts: 155 Shop Shark | | Shop Shark Joined: May 2002 Posts: 155 | Thanks Red58 for the diagram...I've got the meter and the patience, but needed the diagram to see where the junctions are..
Actually the problem is a ground loop as the rear lights are sealed, rubber mounted units and they work without being grounded..
and that shouldn't happen...
Geoff
68 GMC 3800
56 JD420C w/JD90 Loader
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