Too much voltage from bedroom 12v cigarette lighter port??

[versicom]

My multimeter is telling me that the 12v outlet in my 5th wheel bedroom putting out way too much voltage for about 2 seconds and them drops to the normal 12v. It's cooking any 12v device I plug into it. I have checked the socket and tried a new one so it's not the socket. The other 12v outlets in the trailer are all normal constant 12v. Anyone have any ideas? Do they make a 12v middle man conditioner that keeps voltage at 12v?

Weekend Warrior SLC 3705 (38' fifth wheel triple axel)

[time2roll]

What model converter? What is the actual voltage?
Up to 14.8 is probably normal.

[ScottG]

Depending on your converter, it may have been in a desulfate mode for the batteries. I would go back and check it again.

[WyoTraveler]

Aren't all the 12v outlets connected to the same bank of batteries? Of coarse voltage is higher when charging but When you say higher for a few seconds, how much higher? Could you be getting a static charge for some reason when you plug something into that outlet?

Thought about this. Maybe a static charge could be building on the run to the bedroom area. In the past I have taken 2 wires, hot and ground, put them in an electric drill and twist them up so you have a twisted pair. Sometimes that will prevent things from being picked up on the line. Just a thought. Don't know if that is your problem or not.