Originally Posted by
Chicknstripn
You’ll want a direct power source to the relay and a switched power source to turn relay on and connect battery power to component. Just splice into your headlight for switched power.
Look up/google search how to wire an accessory relay.
Unless you want to get stranded somewhere DO NOT pull power directly from the battery to the component you’re trying to power.
And I think 08 and up xbs and xbr models have an accessory plug, I believe it was a factory deal for optional Buell heated grips. I do know for sure that my 07 firebolt had no such accessory plug and the 07 xbs wire harness I used to convert to a single headlight did not have an accessory plug.
I have heated grips, a voltmeter with built in USB charger, and a motogadget m-lock ignition that all use the relay method I mentioned earlier to power them.
Good luck