Author: CharlieM
Subject: Running the fridge while driving
Posted: 09 Jun 2016 at 9:20pm
There are several things you can check with a digital voltmeter. With the engine running and the 7 pin Bargman disconnected, check between pin 4 and pin 1. You should see 13+ volts. The voltage should disappear when you turn off the engine.
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Next, with the engine running, the trailer connected and everything in the trailer off including the fridge, measure voltage at the battery terminals. Again you should see 13+ volts. If both these tests pass your TV and TT are wired correctly. Please note that, as Techntrek and others have said, running the fridge on 12VDC while driving is marginal at best and may totally discharge the battery at worst.
Subject: Running the fridge while driving
Posted: 09 Jun 2016 at 9:20pm
There are several things you can check with a digital voltmeter. With the engine running and the 7 pin Bargman disconnected, check between pin 4 and pin 1. You should see 13+ volts. The voltage should disappear when you turn off the engine.

Next, with the engine running, the trailer connected and everything in the trailer off including the fridge, measure voltage at the battery terminals. Again you should see 13+ volts. If both these tests pass your TV and TT are wired correctly. Please note that, as Techntrek and others have said, running the fridge on 12VDC while driving is marginal at best and may totally discharge the battery at worst.