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RV Electrical Wiring Repairs

By Dave Rongey - Summary:

Electrical Repairs for RV Electrical Wiring: We no longer have electricity to any lights in our slide out.

RV Wiring Repairs

  On our way to California, one of our 5th wheel tires blew. When it shredded, the tread tore into the undercarriage of the RV, ripping out some wiring. We no longer have electricity to any lights in our slide out. Our stereo in the slide out is receiving electricity, but the speaker wires were pulled out as well, so we have no sound. We have nearly no electrical knowledge, but we fed the wires back up through the hole they were pulled from, and attempted to reconnect the wires. They are color coded black and white, and through all of our attempts, we were unable to get the lights to come on. We changed out the fuse, and in the process of trying to reconnect wires, we blew the new fuse we put in. We’re thinking maybe we’re missing the ground wire, but we don’t see any wires sticking out anywhere, or any that don’t seem to have a match. If you think this is the ground, how do we go about locating the ground wire and where would we ground it to?

This electrical question came from: Brent, a RV Owner in South San Francisco, California.
See more about Home Wiring for California

Additional Comments: What a great resource, we’re at our wits end! THANKS!!

Dave’s Reply:
Thanks for your electrical question Brent.

Electrical Repairs for RV Electrical Wiring

Brent, if this is the wiring for a 120 volt circuit then yes, there should be a ground wire. The wiring in the affected undercarriage area should be closely inspected and if there are any areas where the circuit wiring has been damaged then it will either need to be repaired or replaced in order to restore the power to the circuit.

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4 Responses to “RV Electrical Wiring Repairs”
  1. Dave Rongey says:

    Hi Christine,
    After doing some research I discovered that Prowler RV Manuals and a Slide Out Wiring Diagram is difficult to locate. It would be best to have an electrician or RV service technician test the circuit breakers and fuses to make sure they are working correctly, as well as the GFCI outlet for power. The junction box located under the unit and the wiring should be inspected if all of the power sources look normal. It may be good to call the previous owner to see if they can provide additional information that would be helpful.
    I hope this helps you,

  2. Christine says:

    I bought a used 2001 Prowler 5th Wheel. When we set it up the slide out goes in and out but the interior lights above the couch and table as well as the plug in do not work. We have tried turning the breakers on and off, and checked the fuses, tested the GFI plug. Is there anything else that may be wrong? Perhaps the junction box underneath the slide?

  3. Dave Rongey says:

    Please ask this question using the question form which will then provide you with the information that will assist you.

  4. Dave says:

    a friend removed a 12 volt dimmer switch and now does not know what wire went where. The switch has a red+(in) wire & black wire marked DC in and a red+ (out) wire & white wire marked DC out. Can you tell me how to wire this switch.