Batteries NOT charging while towing

Splashers3 wrote:
Did a search and saw some good info about batteries charging/not charging while towing...but here's a situation some may not know about - I didn't, and I've towed for nearly 6 yrs with my 2008 2500 D/A.

Picked up trailer from RV repair shop (yearly maintenance), battery in trailer too weak to raise landing gear. They suggested plugging cord into truck' 7-pin outlet, which SHOULD have supplied power to raise gear. Well, it did NOT. They got a battery and jumper cabled it in, and the gear raised. BUT there is much more to this story.

Tech checked for 12v - nothing. Nothing in bed outlet, nothing at bumper outlet. Checked fuse box, 30A fuse present. Tech starts peeling away wrappings on one of the cable runs...pulls out a wire and hooks up to fuse box post next to break controller.

Guess what, 12 volts supplied to both outlets! He said this happens all the time, by all the truck manufacturers - even though I had the towing package option. They fail to hook this wire up....so for 6 yrs I NEVER had 12 volts charging battery while towing...since we always hook up to shore power the battery drain was never noticed.

We will continue using Affordable RV & Truck Repair in King George, Va....that was a bonus - and they didn't charge!

I hope this will cause folks to check their TV - there are probably several folks in this boat, and don't know it.

This a a very good dealership!!!
Some bill for every minute they work on your rig. Others realize there is far more profit doing "Free" work. It is a habit of the better shops, when they do charge for work the price is fair for the work done, and the quality is there also.