Will Having Breakaway Battery and Dump Trailer Battery Connected Cause Problems

Question

Question:

I have a dump trailer. I use the constant power from the 7-pin harness to charge the Breakaway module and the battery needed for the dump trailer pump. When the trailer is disconnected from my truck the Breakaway module is charging itself off of the dump battery. Will it constantly being hooked up hurt the Breakaway module and also kill the battery on the dump trailer?

asked by: Joshua W

0

Expert Reply:

When two batteries are connected together they will attempt to balance the same voltage so if one battery was less charged than the other it would draw amperage from the other one till they both balanced out. It really won't hurt anything, but if you drain the dump battery from using the dump feature you will eventually drain the weaker breakaway battery too as it struggles to charge the larger battery. It would be probably your best option to have the two on separate charge wires.

expert reply by: Jameson C

0

Answer 1

The "Trailer Disconnected" error message on the dash with a factory brake controller is usually related to an issue with the blue brake output wire that runs from the brake controller to the 7-Way connector. The fact that the issue remains…

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Answer 2

There are a few things that can cause the brakes to lock up on a trailer. First, disconnect the trailer from the vehicle. Then use a circuit tester like #PTW2979 if needed to test the connector on the vehicle. Have someone sit in the truck and run…

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Answer 3

I have attached a diagram that shows how the Dexter Electric Over Hydraulic Brake Actuator, part #K71-651 needs to be wired. You may want to check the wiring to make sure it is wired correctly and none of the wires show any signs of damage. Make sure…

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Answer 4

An often seen cause for the trailer brake controller to display a disconnect error message is a damaged or corroded connector on the trailer. This may have occurred during it's time at the shop or just didn't show up as a issue until after…

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Answer 5

I would start by checking the condition and level of the brake fluid. I typically recommend flushing and replacing the brake fluid on these types of units every year no matter how much the trailers are used. Brake fluid can absorb moisture which will…

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Answer 6

It sounds like there was bleed-over from one of your trailer connector pins to your brake output pin. This can happen with just a little corrosion, so it doesn't surprise me that you unplugged the trailer and plugged it back in and the issue…

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Answer 7

It sounds like there is a short somewhere in your trailer wiring that is causing the #K71-651 to run. Unless the actuator itself has an internal problem the only way it is going to activate is if it senses that a truck is connected. The black wire of…

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Answer 8

Check the connections of your breakaway system you have on your trailer. It sounds like the plug might be partially pulled or the power from the battery of that system has some how shorted out to the brake output circuit and is telling the actuator…

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Answer 9

It sounds like the rain water caused a short and drew power to the electric trailer brakes causing them to lock up. the brake controller, since it is inside the vehicle and not exposed to the elements, would not have been affected by the weather so…

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Answer 10

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 11

Hey Jon; I was actually just talking to Furrion about heat options for the Chill Cube yesterday (1/21/2025). At this time, the only way to have heat with this unit is through a furnace on a ducted setup. The Furrion Chill Cube RV AC w/ Air…

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Answer 12

Hey Doug, That's a good question because fit is really important so the cover stays snug on your trailer, and there is a specific way to measure for the etrailer covers. It's pretty simple, and what you want to do is measure the body of the…

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Will Having Breakaway Battery and Dump Trailer Battery Connected Cause Problems

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