Does your truck have a pushrod that actuates the b rake switch at the pedal?
Check it to make sure the retaining clip is not loose or missing. Also check to see if the electrical connectrions have not come loose and that the switch is getting actuated with th epedal being pressed.
Let me know if that helps.
January, 11, 2011 AT 9:56 AM
Truck does have a pushrod, tested brake light switch does function when peddle is pushed "Thanks Jeff"
January, 11, 2011 AT 4:17 PM
Here is a schematic of the exterior lights.
Check the Orange wire at brake switch, on top of brake pedal for battery voltage. If voltage is available, use a jumper wire to bridge the Orange and White wire. If brake lights come on, the switch is bad or out of adjustment.
January, 12, 2011 AT 12:43 AM
The truck has functioning lights, when I plug in 7pin harness to my trailer I have running lights, turning signals, backup lights, power to my electric brakes but no stop lights on trailer> Please help Jeff
January, 12, 2011 AT 2:39 PM
Do you mean only the trailer stop lights are not working?
Are the brake lights on vehicle body working correctly?
The CHMSL fuse (10A) is for the brake lights. If battery voltage is not available athe trailer connector, check the CHMSL fuse. Use a test lamp to test both ends of the fuse. If voltage is available and none found at trailer connector (Light Blue wire), you have an open circuit between the fuse and trailer connector.
January, 12, 2011 AT 9:36 PM
Thank you KHLow2008 will try to test that circuit (fuse is good)will advise thanks again. Jeff
January, 13, 2011 AT 12:05 AM
Sorry it took me so long as I misunderstood your question.