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Old 08-19-2014, 06:39 AM   #4 (permalink)
MPaulHolmes
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Location: Maricopa, AZ (sort of. Actually outside of town)
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Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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I think it's a good idea. The contactor & precharge relay control on your AC controller just requires a single wire running and returning to the contactor. Either the positive or negative line of the coil. It would maybe add another ohm to the coil, but that wouldn't hurt anything. And I think the coil wires are usually rated for 600v (at least on the tyco ev200), so you wouldn't need to worry about that. I just thought about how an EV200 uses an economizer... That means a high frequency signal on a long wire. I suppose you should twist the wire together as it runs to the controller & back to the contactor if you want the controller to turn it on. Or you could just flip a switch in the car to close the contactor.
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