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Click on image for the lowdown. 
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8 members (Woogeroo, Nick in Manitou, Jon G, baldeagle, FAST55, Hanks custodian, mick53, 50Chevy3100),
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guests, and
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robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,014 Posts1,055,332 Members48,419 | | 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!
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#87002 03/06/2005 11:23 PM | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | When the system is not charging there is 12V from the ignition to the light and it grounds on the other end, lighting the bulb. When the alternator is charging there is 12V coming from that direction also. With 12V on both sides and no ground the bulb can't light. | | |
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