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Can I run my fan with direct line to 12V?

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Old 11-29-2006, 09:07 AM
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Can I run my fan with direct line to 12V?

My heater fan in my 93 4x4 4cyl quit working lately and I'm not quite sure yet what's wrong with it. Any recommendations on tracking down the problem? Can I run wires to it directly from the battery and just use a simple On/OFF switch to run it at full speed when necessary until I figure out the problem in the factory harness? I'm pretty sure the fan will still work. The problem would come and go before and I could get the fan to kick on by flicking the outside air/circulation lever back and forth a few times until the fan would come on.

I'm sick of rolling my window down while I drive to keep the windshield clear of fog.

Last edited by GunManOsh; 11-29-2006 at 09:25 AM.
Old 11-29-2006, 09:26 AM
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i don't know what that fan pulls, but i'd make sure to put a fuse inline as well as make sure your switch is capable of the amperage.
Old 11-29-2006, 09:28 AM
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Maybe use a relay? I have a couple laying around.
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