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Turn signal switch solved no brake lights issue. Truck and trailer brake lights now work as they should. TEST DONT GUESS! thank you for the help.

Disregard that question. I'm working on too many things at the same time. With master switch on service drive, brake light switch jumped, at the turn signal switch I do have power in at 460/461 I do not have power out on 22/460 or 22/461. That indicates that the turn signal switch is bad, correct?

Would it be a bad main switch or turn signal switch. At turn signal switch I did have power on wire 22 and on wire 460/461

Alright, I will double check everything, then order a switch. If that fixes it, I will report back. Thank you very much for the help!!

E is a double tag "20 & 24" C is 22

Sorry I re read that and saw I miss understood. On the master light switch I have a wire with a double tag "460 & 461" and I also have a wire with a single tag "22" but I do not have a 22/460 or a 22/461 on that switch harness.

Maser switching on service drive brake switch jumped. I have power on 460/461 at Master switch. I do not have power on 22/460 or 22/461 at master plug behind intake tube. I do not see a 460/461 master plug.

On that harness behind the intake tube, with master switch on service drive, I do not have power on 22/460 or 22/461.

I suppose it's also worth mentioning that my ABS module is cooked. I don't know it that would affect it or not??

Hi, I was finally able to do this test. With the master switch on service drive and the wires at the brake light switch jumped I have power on wire 75 and 75A at the master switch. I have power on 460/461 at the master switch as well, no brake lights.

Hi, not sure how to post this as a new question, but, on my m932a2 I have no truck brake lights. I check the usual problems, I have power to the switch but when I jump the two wires the lights still don't work, so does that automatically mean there is a broken wire from the switch back or do...