Quote:
Originally Posted by Badpuppy
The LED dimmer switch probably won't handle the fan current. Easiest to run it on 6V with a simple toggle switch. The second item you referenced includes a higher powered dimmer, which you certainly don't need.
A more important consideration is that the fan circuit may well be in common with the housing. Negative battery on the housing will short through the coolant directly to the engine's positive ground. If this is the case it can be remedied by either reversing the fan connections - reversing the air flow - or insulating the fan mounts from the housing.
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Here is a picture of the fans. They look like computer fans. To me, they don’t appear to grounded to the case.
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