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Author Topic: Send power to lights/brakes but not inverter?  (Read 182 times)

Jey

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Send power to lights/brakes but not inverter?
« on: June 11, 2019, 02:36:35 AM »
Hello guys,

Is there a way I can bypass my inverter to test my electric brakes?

I have things unhooked/unwired right now inside the trailer like 12v wiring for appliances and outlets so Iíve unhooked the battery as to not cause a fire.

Is there a way to send electricity just to the exterior lights and brakes?

Lou Schneider

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Re: Send power to lights/brakes but not inverter?
« Reply #1 on: June 11, 2019, 03:09:39 AM »
The only line going to the house on the 7 pin connector is the battery charging line.  If you isolate it, probably where it connects to the (+) battery terminal, you can plug the connector into the truck and test the brakes and lights without sending any voltage into the house wiring.

Make sure the breakaway switch has it's pin in place, if it's pulled it will send battery voltage to the brakes or vice-versa, brake voltage to the battery line.

Here's a diagram of the trailer plug:

https://cdn.ajtnt.com/wp-content/uploads/2015/04/7-Way-RV-Style-Trailer-Plug-Wiring-Diagram-2.png

BTW, it's converter, not inverter.  The inverter changes battery voltage into 120 volts to feed the outlets in the trailer.   ;)
« Last Edit: June 11, 2019, 03:14:37 AM by Lou Schneider »

SpencerPJ

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Re: Send power to lights/brakes but not inverter?
« Reply #2 on: June 11, 2019, 06:40:18 AM »
X2 on Lou said.  Do you have a brake controller in your tow vehicle?  That will be needed to check your brakes, although I'm sure someone could easily assist you with wiring direct to them for a check.

Rene T

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Re: Send power to lights/brakes but not inverter?
« Reply #3 on: June 11, 2019, 07:25:07 AM »
Looking at Lou's diagram, run a jumper wire from pin #4 (battery pin) in your trailer plug one at a time to the other pins, you can check out everything. DO NOT run it to pin #1. That's the ground.
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

Jey

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Re: Send power to lights/brakes but not inverter?
« Reply #4 on: June 11, 2019, 07:28:55 AM »
I guess I should have noted I have a self powered trailer light/electric brake 7cpin breakout box that I intended to test everything with