Brake Wiring?
I have encountered a problem with my 2009 Montana 5th wheel (GVWR 15500). Some background first. I have had some blowouts on both sides. I also replaced my umbilical cable (7 pin). I replaced the ...
Forum Discussion
You mention that you have the bed plug for your fiver... I suggest checking the connection from the factory truck side connector to the bed plug extension/pigtail. I was having brake problems as well. I replaced the complete brake assemblies, all trailer wiring for the brake system and upgraded to 10ga wiring. I also replaced the umbilical... All with no success in fixing my brake issues. I also kept getting a "TBC FAULT" or "CHECK TRAILER" Message. After all that, I dug into the truck side wiring and was shocked when I found the harness plug full of green and corrosion. I had installed the in bed plug two years prior and all plugs related to this pigtail were corroded. It ruined my truck side harness connector too. I fixed it by splicing all wires directly and weatherproofing. All is well now. Hope this helps...
