Question about 1999 Yamaha YZF 600 R thunder cat

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Taillight and Brakelight wont work

Ive checked to fuses and the bulb, nothing appears to be wrong but i cant get the running taillight or breaklight to work.

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Take a test light ground clamp to neg side of battery or on frame. turn key on, poke wires going to lights by the base of the taillight assembly.also check with brakes engaged. if no power there, check further down at the electrical connector plug.unplug it, touch pins w/ point,if none there, check for power at fuses to those circuits.if you have power to both side of fuse, but none to connector plug for taillight, check wiring in between. if there is power to the taillight assembly, check bulb socket for rust, corrosion, flattened bulb contacts,not grounding.

Posted on Feb 20, 2009

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