roadsternut Posted April 16, 2023 Share Posted April 16, 2023 I am trying to install a Clayton Heater but it keeps blowing the fuse. It runs on a battery charger supply but when I try to run it off a fuse supply it blows. there are 2 wires, I ran 1 to neg earth and 1 to a fuse supply. I have tried a rheostat switch and and ordinary ps7 push/pull. 5.10.15.30 fuses all blow. changed the motor both run freely until I connect in the car, anybody can help. Steve 1 Quote Link to comment Share on other sites More sharing options...
Howard Posted April 16, 2023 Share Posted April 16, 2023 Sounds to me as if there is a short circuit between the live feed and the casing which only shows up when the heater is in the car. If you have access to a multimeter measure the resistance between the 12v live wire and the case. If it's less than one ohm that is probably the root cause. Quote Link to comment Share on other sites More sharing options...
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