SoundGuy wrote:
Ed_Gee wrote:
I assume the original poster wants to power his Christmas lights while parked. The above Bargman wiring diagram does not necessarily help him ... the +12V on pin four goes away when the engine key is off.
What in the world are you talking about? :h The OP has a 5th with four 6 volt batteries so whether it's plugged into shore power or running on that battery power there will be + 12 vdc on Pin 4 of the trailer's Bargman connector. Good grief! :S
Yeah, my bad !! I was speaking as a motor home owner and forgetting the original poster was speaking of his Fifth Wheel. -- Sheesh!