Forum Discussion

ShawnRaceFan48's avatar
Jun 20, 2013

2004 Starcraft HOT Fuse

Hi all.
We bought a 2004 Starcraft popup last year, and are running into an issue with one of the fuses by the external 12V deep cycle battery.

There are 2 red wires connected to the battery, one with a 20 amp in-line fuse, and the other with a 30 amp in-line fuse. When we first got the camper out of winter storage, the 20-amp fuse was blown, and part of the plastic was melted (consequently cutting power to the trailer). I put in a new 20-amp fuse and when I plug the trailer into a (home) wall outlet, this fuse gets almost burn-your-fingers hot. It doesn't happen when the trailer is running on battery power (not plugged in), and it doesn't happen when it's plugged in to the truck. I hooked up a charger to the battery, and it's right around the 6 amp mark, so it looks to be ok there.

A local service department said it might be a short in a wire somewhere, or maybe the converter needed replaced. I'm fairly new to servicing trailers, so before I go that route I wanted to see if anyone else has ran into this, or has ideas or general insight into what might be causing it.

If it is (or might be the) the converter, is that something that is easily replaced on your own, or best to have a service center take care of it?

Thank you!
Shawn

3 Replies

  • RoyB's avatar
    RoyB
    Explorer II
    I suspect you have your battery installed in REVERSE POLARITY. Observe on the side of the 12VDC battery case and find the word "NEG" or the symbol "-" and grab that connected battery cable and make sure this cable goes directly to the trailer FRAME GROUND connection.

    If that fuse was blown your two REVERSE PPOLARITY fuses onyou 12VDC Power Distribution Panel is most likely blown as well...

    I did say SUSPECT. It could be just like the others have said bad connections around the fuse.

    As big as those fuses are it sure takes a heavy load to blow them...

    just my thoughts
    Roy Ken
  • ShawnRaceFan48 wrote:
    ...A local service department said it might be a short in a wire somewhere, or maybe the converter needed replaced....


    Absolute rubbish, no way those people would work on anything I own. The contacts in the fuse holder may be worn/corroded. A bad connection causes arcing and arcing causes heat.