KD4UPL wrote:
SoundGuy wrote:
naturist wrote:
My TT owners' manual says the trailer won't draw power from the TV unless it is running.
Baloney. How would your trailer "know" whether the truck's charge line is active or not, whether the truck is running or not? Anytime the charge line is active the trailer will draw from it.
Good grief. :R
It's called various things: battery isolater, voltage controlled relay, automatic charging relay, Basically if the voltage is above about 13.2 volts it will connect assuming a running engine. When the voltage is less than that it disconnects. I've got one on my camper. It works great.
By the way, unless GM has changed recently the charge line is always hot. However, I see no need to unplug for one night if you have 2 batteries on the camper. But, better safe than sorry I guess.
Naturist was talking about the trailer disconnecting, not the truck.
So no, the trailer doesn't know the truck is running or not and connect based on that knowledge. I suspect he maybe misread the manual or read it in his TV's manual.
