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E-Fan Question

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Hey guys, im looking into e-fans on my 99 silverado 5.3


which is better? to have the E-fans run on a toggle switch? or to get a harness and everything and have it tuned for E-fans?


The truck is already tunned by blackbear. just wandering if its a difference or just a personal opinion?


Thanks guys,



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Well, running them off a toggle switch works, but inevitably you will accidentally leave them on and run the battery flat one day.


Since you have Justin tuning your truck, I would add a harness and have them triggered off the PCM; you will also have to trigger low-fan operation when the A/C compressor is engaged.


Mr. P.

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