After helping others here in the past I now find that I need help from the good folks here. Hopefully someone here has the answer to my problem.
My '02 Chrysler T&C Limited AWD van with towing package keeps blowing out brake light fuse 26 (20A) only after leaving the garage. The fuse supplies power to the brake light switch and that passes power on to other things besides the brake lights. The testing I have done so far hasn’t pointed me to anything specific yet because when I replace the fuse, things work fine in the garage. The load resistance at the fuse position is about 75 ohms when the pedal is pushed down so that is no problem. The fuse only blows out when I get out on the road. The wiring at the lights has no obvious problem but haven’t got to the wiring between the switch and the rear end yet.
I found a post on YouTube that seemed to be the answer to my issue but it didn’t help. The poster had shown how to replace the brake light switch and that apparently fixed his fuse issue but it didn’t work for me. The switch is very unusual and it can’t be reinstalled once it has been removed from the base. There is a alignment mechanism inside the switch that gets set once the switch is installed.
It seems there should be a plugin for the trailer tow harness but so far I haven’t seen it. I know that is a likely area for trouble like this. I have the factory manuals for the van and will keep looking it over for possible trouble areas. If anyone here has any good ideas please let me know.