Fuses are good and bulbs are good can't locate problem. HELP!
Q&AAsk Your Question
1999 Dodge Ram 2500
Question: Brake lights don't work on truck or trailer.
Answer #1Johnny Mopar March 07, 2009, 21:53Master
Check for 12 volts at the fuse. A good fuse means nothing if no voltage is present. Fuse #13 (20A) in the Power Distribution Center powers up the brake lamps switch. Equally important is checking the lamps ground circuits. All else checking out ok, replace the brake lamps switch.