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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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Mod | | | Forums66 Topics128,009 Posts1,055,292 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!
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| | | | Joined: Feb 2008 Posts: 212 'Bolter | | 'Bolter Joined: Feb 2008 Posts: 212 | The type of alternator is an early 70s 10SI 3 wire . It has the average amps because there is nothing extra on the truck but a heater. It will show a charge after I shift into second gear but my concern was when idling in the morning when it is cold with the heater running it shows a minus draw. If I turn the truck off after the warm up the power is not restored back to the battery.So should I not run the heater or lights until I actually start out on the road? | | |
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