off to another home
my friends truck has been having problems with the brakes on his trailer. its a 2006 F-350 with the factory brake controller. with the truck running battery voltage was at 14.1. at the plug the brake light pin was 14.1 and the brake pin with the controller on 10 and held all the way its only like 13.6. with the trailer plugged in voltage at the wire about 2-3ft back is only like 12.x. all the way back at the brakes its only like 12.7. why is there so much loss all the way back there? is that normal. his main problem is that the braking on BOTH of his trailers sucks. though if i were to pull the flatbed i could lock it up no problem.