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Click on image for the lowdown. 
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| | | Forums66 Topics128,175 Posts1,057,119 Members48,463 | | 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 2017 Posts: 330 'Bolter | | 'Bolter Joined: May 2017 Posts: 330 | The brown wire does connect to the last terminal on the regulator, it is the indicator light circuit (idiot light on dash) and needs to be connected for the alternator to work. Some vehicles do not have a dash light and the brown wire is connected directly to the ignition circuit through a resistor wire imbedded in the wiring harness.
Mac :{)
1962 K10 short step side, much modified for rally
1969 T50 fire truck, almost nos, needs a few things
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