Wiring up a 7 pin trailer connector and have a question (1 Viewer)

[hidesertwheelin]

I'm adding a 7 pin trailer plug to my 2000 LX470. I am running the charging wire for the trailer from the battery in the LX to the plug. Will this low voltage battery disconnect stop the trailer battery from draining the LX battery and stop back feed at the same time?

https://www.amazon.com/Voltage-Batt...r=8-4&keywords=low+voltage+battery+disconnect

 

[dace voit]

When I ran a charge wire from the battery in my 80, I used a battery isolation soleniod and a 30amp circuit breaker. Feed back and battery drain will be a non issue. This is a super simple way to get power to the trailer.

The solenoid I used: Tow Ready Battery Isolation Solenoid Tow Ready Accessories and Parts TR118665
The breaker I used: Pollak Circuit Breaker - Cycling/Automatic Reset - 30 Amp - Straight Mount Bracket Pollak Accessorie

You wire the breaker between the battery and solenoid and just run ignition switched power to the center pole on the isolator.