Mechanics

TOYOTA TUNDRA FUSE PROBLEM

2004 Toyota Tundra • 140,000 miles

10 amp fuse keeps blowing under dash for tail lights an running light an dash lights go out. Unplugged dimmer switch an fuse still blows
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Guest
December 23, 2012.



The dimmer switch is for the head lights, not the tail lights. A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a 12 volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it's not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.

Caradiodoc
Dec 23, 2012.