Forum Discussion

GMoney1966_'s avatar
GMoney1966_
Explorer
Jul 09, 2018

DIMMING LIGHT

CLASS "C" PLUGGED INTO POST 50 AMPS. LIGHTS ARE DIMMING...SO I'M LOOKING AT MY INVERTOR...BUT THIS IS PUZZLING TO ME. IF I START THE RV THERE IS A CLICK MY THE DRIVER SEAT SOMEWHERE AND THE LIGHTS BRITTEN. I'LL LET THE TRUCK RUN FOR ABOUT 10 TO 15 MINS. NO MORE PROBLEM UNTIL THE LIGHTS START DIMMING AGAIN. START R/V LIGHT BRITTEN. TURN OFF VEHICLE UNTIL THIS HAPPEN AGAIN. IS THIS STILL THE INVERTOR?



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  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Jul 09, 2018
    Why are you YELLING (Caps Lock ---turn it OFF) :B

    Battery voltage is going down.....vehicle alternator charges battery back up

    Then with engine off battery voltage goes back down

    Check inverter POS/NEG wiring connections
  • Artum_Snowbird's avatar
    Artum_Snowbird
    Explorer
    Jul 09, 2018
    Not likely. More likely it's the wiring between the inverter and the battery. Prove it by connecting to battery negative, then to inverter output negative. If the lights go bright, it's the negative connection. If nothing happens, connect to battery positive and inverter positive. If the lights go bright, it's the positive connection.

    In my case the negative wire on the inverter negative that connects to the battery was so loose it was just dangling in the socket. Plugged in, it took 3 days to drain the batteries. Running the engine feeds the battery on different lines.

    Use your meter to check inverter output on the inverter output terminals before blaming it.

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