Checking trailer light plug
#1
Senior Member
Thread Starter
Checking trailer light plug
I will be going on a trip in a few weeks and will be renting a UHaul trailer. I would like to check to make sure the trailer plug is working correctly, before the day of.
I have a volt meter and know how to use it. I just need to know what pin does what. My truck has both the round 9 pin and the flat 4 pin
I have a volt meter and know how to use it. I just need to know what pin does what. My truck has both the round 9 pin and the flat 4 pin
#2
Mark
iTrader: (1)
If your renting a U-Haul you will most likely be using the 4 pin...which has left turn, right turn, stop and running lights...set your meter to 12VDC and turn one of the above mentioned functions on...go back to the 4 pin and find a good un-painted ground on the truck ...ground the meters black lead to it and probe the 4 pin with the red till you have 12VDC...it would be better with a test light...but the meter will work.
#4
Mark
iTrader: (1)
yup.. that would work too.
#5
"Why Leave it Stock?"
#6
Mark
iTrader: (1)
Perfect