Which switched wire should I tie into? 2012 Street Bob
 

I'm wiring up an aftermarket horn cover which has two led's built in for back lighting. I want them to come on with the ignition. I'm just trying to figure out which wire I can tap into without popping a fuse etc. I haven't found a good wiring diagram specific to my year.

2012 Street Bob.

Thanks for the help.

you don't need one buddy just use a cheap electrical test light, run your wire up too the neck area and tap into your head light power wire, earth any wear , or tap into a earth up there,

Some of HD's international markets require a parking light. Your bike has an unused wire with a right-angle female spade connector near the headlight 3-pin plug.

I used this wire with an inline switch to trigger the relay powering my aux lights.

According to a 2012 wiring diagram I have you'll need the Blue/Black wire from the main harness which runs into pin#1 at the headlight 4-pin connector (position lamp 12V power feed)

Awesome, thanks for the help.

Another good one is the tail light wire, it's on when the key is on.