12v power source

[Luis]

I need a 12v power source to trip the relay that powers my fuseblock located under the seat. I thought of the tail light. Which wire is the light and which is the brake? Yellow or blue?

 

[garyahouse]

Yellow is brake light, blue is tail light.

Gary

darksider #44

 

[Bounce]

Dope it out with your multimeter. No guessing that way.