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Jeff Chambers · 01-18-2006, 10:09 PM

The rear defogger draws huge amperage. Its on a 30-amp circuit and if you trace the wiring, its at least 10-gauge back to the defogger. As outside temps go down, resistance goes down and the current draw will go up. I think what you're seeing is normal for a rear defogger.

01-18-2006, 10:09 PM	#4
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: electrical question The rear defogger draws huge amperage. Its on a 30-amp circuit and if you trace the wiring, its at least 10-gauge back to the defogger. As outside temps go down, resistance goes down and the current draw will go up. I think what you're seeing is normal for a rear defogger. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"