I have problem with 2006 peterbilt 387 , brake lights stays on , checked all fuses and relay.. everything looks ok .. tried to unplug brake switch from trailer valve under cab , did not work either.. does anyone knows if 387 has any other brake switch and cruise control doesn’t work either. Please ..
Peterbilt 387 brake lights and cruise control problem
Discussion in 'Peterbilt Forum' started by Peter387, Jun 9, 2020.
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