Question about 2003 Harley Davidson FLSTF Fat boy

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How do i wire a sidecar to a 2003 fatboy - 2003 Harley Davidson FLSTF Fat boy

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The only thing there is to wire is a tail light and a stop light. tap into the wires running under your rear fender going to the tail light assembly. Turn on the switch, and test the two wires. One will be hot, this should be the tail light. Go to the other wire, it should be "cold", step on the brake pedal and it goes hot. This is the brake light wire. Use those crimp on splicers like they use to wire trailers on cars with. Put the splicers on the sub harness going to the tail light not the main harness. That way, if the wire is damaged, you can buy a sub harness much cheaper than a main harness and it's a LOT easier to put on.

Good Luck

Posted on Jul 31, 2010


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