Forum Discussion
Gdetrailer
Jul 24, 2021Explorer III
wopachop wrote:
Good stuff thanks.
So for anyone following along you want to set your meter to ohms. (horseshoe lookin thing) Then touch the probes between 2 spots.
1. The extension cord ground pin and the trailer frame.
2. The extension cord ground pin and the ground slot of an outlet. If you have an exterior outlet drag the extension cord over to that location. Also remember to find bare metal or touch the head of a bolt that goes into the frame like it appears Mike is doing.
Especially important, in "Ohms" mode on the meter, the circuit must not have any live voltage.
Ohms setting uses the meters own internal battery to check for resistance, if there is any external voltage present in the circuit you will risk damage to the meter (and possibly yourself).
So, make sure the trailer is unplugged from any power source like shore, generator or inverter when testing ground/neutral/hot with a meter set to Ohms.
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,177 PostsLatest Activity: Nov 17, 2025