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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: May 2005 Posts: 1,624 Shop Shark | | Shop Shark Joined: May 2005 Posts: 1,624 | I agree with Jerry. The fan needs to be in an either/or condition. The diode is installed in the fan circuit as a blocking device. When you cut power to the engine the fan will continue to turn for a short time and will act as a generator. That voltage will be enough to keep the engine running in a rough fashion.
Six volt guy living in a twelve volt world
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