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Griffin's avatar
Griffin
Explorer
Apr 23, 2019

Electrical problem

Hey all, wondering if someone could shed some light on an issue I’m having. I have a 95 rustler tt, 24ft. Not sure the specific model. Parked it last fall everything was working fine. I had the battery removed so it wasn’t left in the cold. Kept it well charged over the winter. I recently went to get the trailer going for the season, installed the battery and for some reason no power to the fridge, range hood (only the battery level indicator and tank monitors) and the propane sensor located below near the floor. The other functions on the range hood are working such as the light, fan and water pump switch. I’ve checked the fuses and they are all fine. Plugged into a/c from the side of the house and same thing. Can’t figure out why only these three items are without power. The fridge outlet at the back of the fridge is live so I assume just the controller (thermostat) portion runs on 12volt. I don’t know much about how these things are wired so any insight would be great before I haul it to the dealer to have it diagnosed. Thanks in advance.

14 Replies

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  • opnspaces's avatar
    opnspaces
    Navigator III
    Apr 23, 2019
    Number one check that the batteries are connected correctly. Red or black to positive and White to negative. Make sure you didn't miss any wires, look carefully around and under the batteries. After that check the fuse panel and check all the fuses. I'm guessing you have a bunch of 10 and 15 amp fuses and then one or two larger maybe 40 amp fuses. The bigger fuses are your reverse polarity fuses, check them carefully. Make sure all the fuses are good. The best way is with a meter. If no meter then pull them and inspect.
  • wnjj's avatar
    wnjj
    Explorer II
    Apr 23, 2019
    Take the outside panel off the fridge. Maybe there’s a fuse in there?

    If all of the fuses are good, you’ll have to look for a disconnected wire. Any chance there’s a extra positive or ground wire at the battery that a previous owner used to power those items?

    Also, be sure to swap a fuse from a known working circuit into each of the other places to see if that helps. Sometimes “good” fuses aren’t.
  • Griffin's avatar
    Griffin
    Explorer
    Apr 23, 2019
    Ok I will look for the circuit breaker but I did have power to everything else so it doesn’t seem like that would be the culprit. All the lights, fans, furnace etc were working. Just the fridge panel, tank indicators and the propane sensor were dead. Could a faulty converter produce these symptoms? I’m hoping it’s just an easy fix. I checked all the fuses at the converter and also removed the front panel and found another inline fuse, all were testing fine. Can’t seem to find any more fuses. Are there more that I’m missing? Maybe by the battery at the front?
  • wrgrs50s's avatar
    wrgrs50s
    Explorer
    Apr 23, 2019
    If you accidently hooked the battery post backwards, or even just arced a spark while hooking up the battery, it may have blown a fuse either in the fuse block near the battery box, or the 2 fuses located in the back of your converter/charger. Follow your positive cable to the fuse block to check for a blown 12v circuit breaker or inline fuse.

    Undo your battery cables and plug in to shore power to power up your 110 to 12v converter. With a volt meter check the positive and negative power at the battery cables. If the converter is working you should see between 13 to 14.5 volts.

    Your refrigerator, and furnace have a circuit board that runs off of 12volts, therefore it wont work if no 12v is present, or if voltage is below about 10volts from the battery.

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