Trailer hook up melted

I hooked up the 7 pin connection and heard a electrical type sound. My trailer plug hook up melted and it looks like there is damage inside the receptacle of the truck.


I made sure it wasn’t up side down. This is the first time anything like this has happened. I did everything I normally do.

The lighted in my rear kitchen also don’t work now. Fridge, microwave, hot water tank and other lights still work.

Looks as though our 182G is parked till I get this fixed. Wondering if anyone has any thoughts as to what I did wrong or what might have happened.

Thanks

Check your fuses.  That might give you a clue as to where the problem is.  folks here say the 2 40A fuses are to protect from reverse polarity. 

Connecting the two small wires backward would not necessarily cause a problem if you did not have anything in the plug on the other end to short it. However, if something was shorting the plug, then it would have been a short circuit. In that case, I don't think it would have affected the round 7-way connector. Something else happened that likely caused a short there. It is a symptom of a short. Lest you think 12V can't do that, it sure can. The amperage of your battery at a dead short can weld metal.

You really can't put a 7 way connector in upside down since it has a slot and raised section that have to mate up to prevent that.

When you have the 7 way disconnected and your 120vac connection disconnected can you clarify what works and what doesn't? That would help in troubleshooting. Of course check all your fuses as well as others suggest.

Originally posted by offgrid You really can't put a 7 way connector in upside down since it has a slot and raised section that have to mate up to prevent that. When you have the 7 way disconnected and your 120vac connection disconnected can you clarify what works and what doesn't? That would help in troubleshooting. Of course check all your fuses as well as others suggest.