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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: Jul 2000 Posts: 2,191 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,191 | I have a 53 Chevy truck with a 235
I want to install a toggle switch to bypass the temperature sensor to turn on as needed I was told I need to install a diode between the fan and the temp sensor so not to send a reverse current to the sensor or relay.
Thanks No diode needed. e.g. https://enginedburner.z19.web.core.windows.net/electric-fan-relay-wiring-schematic.html
Gord 🇨🇦
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1954 1/2 ton 235 4 speed
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