Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Thread Tools Display Modes
Old 11-02-2021, 08:36 PM   #1
Brand: Thor Motor Coach
Model: Windsport J34
State: California
Posts: 31
THOR #17915
Need help to trouble shooting the cause of Charge Line blown fuse

On my Class A Thor 34J (Ford F53 chassis), if I pushed the brake pedal*a few times , the Charge Line fuse blew up, this is repeatable. When that happened, I lost power on Hot and trailer break on 7 way trailer plug.

I looked under the RV, the wire for the 7 way trailer plug, everything looked normal and I did not see anything obvious such as damaged wire etc. How do I find out the location of the trouble line?

I do have a multi-meter.

Any help will be greatly appreciated.

Thanks in advance.

__________________ is offline   Reply With Quote
Old 11-02-2021, 08:44 PM   #2
Senior Member
Brand: DRV
Model: Mobile Suites 36RSB3
State: Florida
Posts: 249
THOR #17449
Have you tried unplugging the trailer connection and try the brake again. If ok then the problem is in the trailer. First place I would look is where the wires connect to the trailer plug in. Sometimes a strand of wire will touch where it should not. If nothing there since it happens when the brake is applied. I would look for a shorted wheel brake activator.
GTM41261 is offline   Reply With Quote

7 way trailer plug, blew, fuse

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.

All times are GMT. The time now is 06:40 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2