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Click on image for the lowdown. 
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8 members (Gdads51, Steelonsteel, TUTS 59, Mike Burns, Mike'sPlace, Wickedbass, moparguy, 1 invisible),
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Global Mod,
Mod | | | Forums66 Topics128,065 Posts1,055,870 Members48,428 | | 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!
| | THANKS!
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 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Looking at back of bulb with one terminal across the top and one vertical on each side, the left one is GND, top is low, right is high. That would usually be left: black, top: red or red/wht and right: grn or red.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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