I have a 2014 SuperCrew and am trying to wire the third brake light on my Leer cap. After much searching on the web, I found out the the power wire was located in the wire harness right next to the master cylinder. It is a blue wire with a orange stripe that was capped off with black plastic. I put a multi meter on the wire and it was getting power only when the brake was depressed. However, somewhere along the line it stopped showing power. I'm thinking I may have shorted it out. I checked the manual for a fuse position for this but didn't find anything about it. Would anyone be able to tell me which fuse position controls this line. Thanking in advance anyone that can help.

Paul