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Old 03-24-2026, 01:10 AM   #1
Chevy1966
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Mystery Electrical Device - Rectifier?

Restoration work finally underway on my '66 C20, starting with a clean-up under the hood of old, unused wiring. Sitting on the inner fender near the voltage regulator is the device shown in the attached picture - any idea what it is or what it was used for? Thanks for any help.
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Old 03-24-2026, 06:08 AM   #2
SkinnyG
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Re: Mystery Electrical Device - Rectifier?

That is a battery isolator, for running dual batteries or (more likely) a camper or RV trailer of some sort.
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Old 03-24-2026, 11:24 AM   #3
Chevy1966
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Re: Mystery Electrical Device - Rectifier?

Quote:
Originally Posted by SkinnyG View Post
That is a battery isolator, for running dual batteries or (more likely) a camper or RV trailer of some sort.
Makes perfect sense. This truck had a dual battery setup. Thanks very much Skinny!
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