shorted out 12 volt system

First, check battery. Second, battery wiring. Third, all fuses.

You may have at least three blown fuses.

One is located very close to the battery terminal and on the older trailers is an IN-LINE fuse. The newer trailer sometimes use a resetable in-line circuit breaker here.

There are two other fuses located on the 12VDC Power Distribution Panle labeled REVERSE POLARITY on my panel.

This is the location of my two reverse polarity fuses. These two 12VDC plu-in fuses are located in the center of the 12VDC fuse panel and are sitting by themself...


Roy Ken

Double post...

Moved from Forum Technical Support

When you say the 12V system, do you mean the chassis or the RV side? If you mean the chassis then you probably blew a fuseable link.

I see no reason why anything would blow, except the battery. You did not over draw amperage thru anything, except the battery. Unless of course, the whole story is not been told :)

I could also add, your 12v system is not "shorted"
Your 12v system has a "disconnect"...or "open circuit" ?.big difference tween the 2

RJsfishin wrote:
I see no reason why anything would blow, except the battery. You did not over draw amperage thru anything, except the battery. Unless of course, the whole story is not been told :)

I hadn't thought of that but your right. Just a short across the battery puts no current through the RV.
What was happening before the battery was shorted?

It will put a short across the converter/charger output if it was powered up at the time (Connected to shore power)

Roy ken

If the short was right to the positive battery terminal, I would look for an issue in the ground line. I just start at one end with a test light and go step by step to find where the power stops.