Mike Higbee
Member
While on vacation 1000 miles from home we made a quick stop and when I restarted the Expedition the travel trailer brakes were locked up solid. I checked all of the obvious stuff and finally just disconnected the trailer power cord and drove to our immediate destination. After a bit of trouble shooting but no cure found I pulled the brake module fuse #18, reconnected the power cable and at least had all of the necessary lights, turn indicators, brake lights etc. but no trailer brakes.
We limped back home and after spending the day cleaning ground terminals, checking connections etc I've made no progress. I purchased a LED connection tester and it shows that the brake lead is hot all of the time even when the ignition is off!!. The 12volt charging lead is hot when the engine is running and not hot when the engine is off. I'm stumped, if the brake circuit was getting juice from the 12v charging wire due to a short, corrosion or frayed wire it wouldn't be hot when the ignition is off and the 12v circuit isn't hot. Any thought or suggestions would be greatly appreciated.
We limped back home and after spending the day cleaning ground terminals, checking connections etc I've made no progress. I purchased a LED connection tester and it shows that the brake lead is hot all of the time even when the ignition is off!!. The 12volt charging lead is hot when the engine is running and not hot when the engine is off. I'm stumped, if the brake circuit was getting juice from the 12v charging wire due to a short, corrosion or frayed wire it wouldn't be hot when the ignition is off and the 12v circuit isn't hot. Any thought or suggestions would be greatly appreciated.