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I have an '01 Excursion V-10. I use a Reese Brakeman Digital brake controller for my 18' car hauler. The last time I towed this trailer everything worked fine. Today, after I hooked up to the trailer the controller will only show a (.) when the brakes are applied. It normally will ONLY show (.) if the trailer is not hooked up at all.
My question is how do I go about troubleshooting this and in what order? Also if it helps the trailer does have it's own battery in case the trailer disconnects from the truck while in tow. Thanks for the help in advance.
Check your connection at the vehicle. The trailer plug connections may be corroded or loose. Use a spray electrical cleaner to clean the contacts. Then using a small flat blade screwdriver, bend each connector closer to itself to make the connection tighter when plugged in. Clean the vehicle plug with the same spray. If possible the car end may have split blade ends and you may carefully spread them apart a little also. Be careful not to touch two at a time or you may blow a fuse. Check your fuses anyway just in case. Usually cleaning a making a tight connection works as long as the fuses are good.
Thanks for the reply. You know, sometimes it's just that you need someone to kickstart your brain a little. I found the break in the ground wire right over the axle, guess it rubbed the axle long enough to rub in two. Problem solved, thanks Lou Braun from the super duty/heavy duty thread!!!
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