Forum Discussion

hambleton's avatar
hambleton
Explorer
Jun 16, 2019

Fleetwood Niagara PUP - Weird Electrical Issue

I inherited a 2005 Fleetwood Niagara pop up camper And was told that there might be some problems with the electrical system... “maybe a short somewhere,” they said.

Upon closer inspection the 7 pin wire harness was dragged along the road and frayed down to the copper wire. That’s the first issue which is easy to resolve. I then opened up the plastic battery boxes on the tow hitch to discover what appears to be 2 12v batteries connected in series (pos to neg). Although, in this case, both positive and negative terminals are connected to their opposing terminals on the opposite battery, which would I guess make this series/parallel?

Regardless, the way these batteries are connected would double the voltage not the capacity, resulting in 24 volts of output. Unless I’m completely crazy or missing something? I do know for certain that this trailer is a 12v system and I do know for certain these two batteries are each 12v and appear to be connected in series.

Any electrical experts care to chime in? What sorta damage might be done pushing 24v through a 12v system? Surely these have some sort of breaker? I cannot find a highly detailed wiring diagram for this thing, but I am of the mind to replace these two batteries but connect them in parallel which would make sense for this type of trailer, which has a bunch of bells and whistle’s and I can see you needing more capacity, not voltage. Maybe the previous owner just messed up and reconnected them wrong.

  • I can tell you right where the short is.....
    IT IS RIGHT THERE......
    Negative to positive and negative to positive will get you NOTHING but Heat...

    It is a pretty safe bet that nothing got hurt because it was dead before it go started. If you have anything at all, then one jar has been successfully charged backward.

    I will have to suggest that both of the jars (batteries) are only good for a core deposit at this point.

    Get an new pair of Grp 29s and strap them in parallel (Pos to Pos and Neg to Neg) or a pair of GC2 (6V golfcart) and strap them in series.

    Matt
  • That is sweet. They have to be dead or the cables would be smoked. dead short.
  • Thanks for chiming in. Appreciate the confirmation. I was scratching my head trying to figure out why they were in series... then I spoke with the previous owner and learned he commonly removed the batteries during storage and connected the jumpers incorrectly.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,188 PostsLatest Activity: Jan 18, 2025