Please fill out the following to ask a question. MAKE:ford MODEL:f150 4x4 YEAR:2012 MILES:??? ENGINE:5.0l DESCRIBE ISSUE.... Have police truck in my bay, wiring is a mess all around. Basically, this Naskapi police truck should be retired. They use it as a spare and the cop's use it to go to gym and stuff. Anyway, redid all wiring for back of truck, had no lights at all. Trailer plug was also sheared off and wires hanging. Some were live and sparked here and there and obviously a few fuses blown. Problem is, after redoing all the wiring, I do not have right rear turn and stop lights. Have parking, back up and strobes work also. I back probed the vt/or wire back to the BCM, no voltage. I am leaning towards a BCM. As I see in the wiring, the BCM controls the turn/stop lights and the fuse is not blown and has power. The schematic shows a FET transistor after the micro processor. Wondering if loose wires from the trailer harness that is sheared off could have blown that micro processor or the FET? This truck is an electrical nightmare. The tranny has been changed, the engine also. The person that did the work on this car is an obvious idiot. All connectors that I encounter have either been cut and butt connected or just plain twisted and taped. No solder, no heat shrink and overall mess. The new cop is a white guy and swears he will no longer do business with the Naskapi montagnais garage. I understand his delima, he works for the tribe, but they just plain do shoddy work. Anyway, anybody ever tried to open one of these BCM's and tried to fix this sort of issue, or just replace and reprogram the BCM. Any advice would be nice. I will try to upload some diagrams, but internet seems slow and BAT auto has problems today posting my uploads. Well, seems to have worked, pay attention to third snapshot. Notice F13 fuse and micro controller and FET. I was thinking of cheating and taking power from right front turn signal and bypassing it to vt/or wire, and taking stop light power from left rear or CHMSL(center high mounted stop lamp) to vt/or wire but wondering how that would work when right turn signal is on and braking at same time. Would I have a conflict there since each circuit seems to be transistor driven. Would this bias the rest of the micro controller that seems to be working for all other functions except RR turn and stop? Any advice would be nice, my brain is in a fog on this one.