Sunday, November 22, 2009

Heater/Defroster Fix

The Front Heater/Windshield Defroster kept blowing its panel-mount circuit breaker when it was on high for over a few minutes. A PO two-times back replaced all the fuses with push-push (push on/reset, push off) panel mount circuit breakers (very cool to replace the fuses as well as provide a way to switch-off any circuit). Almost all were 8 amp except the one for the heater/defroster of which I could not read any rating. I measured the actual current draw with the fan at Low Speed and High Speed and measured 2.8 amps and 5.5 amps respectively. So I changed the fuel pump breaker to 15 amp (I plan on upgrading the pump anyway) and moved the 8 amp that was there to the Defroster/Heater. I guess the old breaker was bad or might have been rated for 5 amps or less. I also shortened the wires going to the breaker as each wire was about 8 inches too long.

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