7 pin connector

[leslie]

When we are traveling and just spending the night at a campground, not unhitching, perhaps just hooked up to 30 amps - will it harm anything to leave the 7 pin connector hooked up? Or should I really disconnect it once we plug in to the 30 amps?

[charliem]

[quote source="/post/16382/thread" timestamp="1446299920" author="@leslie"]When we are traveling and just spending the night at a campground, not unhitching, perhaps just hooked up to 30 amps - will it harm anything to leave the 7 pin connector hooked up? Or should I really disconnect it once we plug in to the 30 amps?[/quote]It's OK to leave it connected to the TV if the TV disconnects the 7 pin battery charge line when the engine is stopped. Most, but not all, vehicles do this. I think the easiest way to check this, if you don't use a voltmeter, is:

With the 7 pin connector connected, the TV engine off, and the TT not plugged in to shore power, disconnect one terminal of the TT battery. Check the 12 volt devices on the TT such as lights or fans. If the TV is wired correctly they should not work. If they do work with the TT battery disconnected the TV wiring should be corrected or you must disconnect when parked. If the lights and fans do not work when the TT battery is disconnected and the 7 pin is plugged in you're good to go. The TV and TT batteries are isolated when the engine is off.

[leslie]

Thanks, charliem. The tow package on the Jeep Grand Cherokee cuts off power to the 7 pin connector when the engine is off. To feel really comfortable with this, I will disconnect the 7 pin connector.