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Katdaddy's avatar
Katdaddy
Explorer II
May 25, 2018

No charge from tow vehicle

We just took a quick trip to Cades Cove. No hookups in campground so we run off batteries. I checked the battery voltage before we headed home and again when we arrived. It appears that I had no charging on the trip home. I checked the plug in the truck and I have charging voltage there. Where do I need to start to find where the problem is in the camper?
Thanks in advance for your help.

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  • BFL13's avatar
    BFL13
    Explorer II
    May 25, 2018
    First suspect is the pin connections (pin #4) Scrape out any corrosion, wiggle them together hard, and try again. You can also take the plug apart and clean it all up.

    With the trailer plug not connected to the truck's, stick the multi-meter probes into pin 4 and ground pin--should get trailer battery voltage.

    If no joy, your multi-meter search starts again at the terminals where the 7-pin cord is attached on the trailer. (on a 5er under by the kingpin, not sure where with a TT)

    Sometimes the 7-pin positive on the trailer is spliced into another positive such as for the jacks and it is fused.

    Of course you do this with the truck running so you can see the voltage is 13 or 14 something and not 12.x battery voltage.

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