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Old 03-16-2014, 08:23 AM   #1
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Minor Electrical Issues Questions

We have a 2000 National Tradewinds RV and we have two issues we are hoping someone can help us with.

1.) The turn signals work great in the front and the side marker, however, when using the directional turn signal, both tail lights flash at the same time. Just the tail lights only. What could be causing this and how can we solve it?

2.) We have a rear view camera and when the monitor is off, while driving and using turn signals, the monitor flashes on and off. It also happens when applying brakes. What could causing this and how can we solve it?

We greatly appreciate any help you can provide and we love this forum. You guys have helped up tremendously with previous issues on our motorhome. We speak highly of the forums to all our family and friends. So thanks again for your help!

Make it a great day,
RV Dreamer
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Old 03-16-2014, 09:08 AM   #2
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Where any changes or service work done to the MH? Really sounds like there is a short or pinched wire harness somewhere, or something got soaking wet.
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Old 03-16-2014, 09:37 AM   #3
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Minor Electrical Issues Questions

Thanks for your help...sounds like we have a lot of troubleshooting to do. Not sure if anyone worked on it in the past as we purchased the motorhome recently. I guess I will try unplugging the towing plug and see what happens and then go from there.

Thanks again,
RV Dreamer
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Old 03-16-2014, 09:45 AM   #4
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Perhaps a short in the trailer wiring hook up. Other possibility, perhaps previous owner had a side camera hooked up to turn signal to turn on? That's the only reason I can think that turn signal would be connected to monitor. You're going to have to search for wiring modifications.
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Old 03-16-2014, 10:10 AM   #5
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Perhaps a short in the trailer wiring hook up. Other possibility, perhaps previous owner had a side camera hooked up to turn signal to turn on? That's the only reason I can think that turn signal would be connected to monitor. You're going to have to search for wiring modifications.
Unfortunately, we purchased the camper from a RV Dealership and don't know the previous owner. I guess the only way to troubleshoot will be to see if it has been rewired. We have a manual on back-up camera but it is vague. We also have the wiring diagrams but it doesn't show how it has been routed. So we'll have to chase it and see what we can find out.

Thanks again,
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Old 03-16-2014, 10:56 AM   #6
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Often the monitor is wired to the reverse or back up light to turn on when backing. Perhaps your back up lights are connected to turn signals in back to turn both on and blink the monitor.
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Old 03-16-2014, 12:47 PM   #7
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Originally Posted by BFlinn181 View Post
Often the monitor is wired to the reverse or back up light to turn on when backing. Perhaps your back up lights are connected to turn signals in back to turn both on and blink the monitor.

Not to mention that if your camera system includes side cameras, they are wired to show up on the monitor whenever you turn on a turn signal.

I would first disconnect the camera system completely and then check the signal lights to see if that eliminated the problem and go from there. Remove the monitor and disconnect it from the wiring harness.

good luck

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Old 03-16-2014, 01:03 PM   #8
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Often the monitor is wired to the reverse or back up light to turn on when backing. Perhaps your back up lights are connected to turn signals in back to turn both on and blink the monitor.
Poor grounds on the tail light housings, or wiring, could be causing these issues.
Because the power can't get to ground , it'll back up into any related circuit, turn signals, monitor, tail lights, etc.
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Old 03-16-2014, 03:16 PM   #9
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Sounds like a bad ground and it is seeking an alternative path. Camera, tail lights, other turn signal, etc.



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Old 03-17-2014, 10:43 AM   #10
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My 2003 Sea Breeze done about the same thing when raining one time. Check the tail lens and make sure they are not full of water. Don't know how the wiring is but once I dried mine out they worked normal again and no more blinking camera either! Hope it's that simple for you! Have fun and stay safe!! Steve
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Old 03-17-2014, 10:54 AM   #11
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Check for loose wiring in your tow cable plug off back of coach and some wiring have blocking diodes to stop feed back from tow.
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Old 03-17-2014, 11:17 AM   #12
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Quote:
Originally Posted by Skip426 View Post
Poor grounds on the tail light housings, or wiring, could be causing these issues.
Because the power can't get to ground , it'll back up into any related circuit, turn signals, monitor, tail lights, etc.
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Years ago I soldered ground wires to all of the light sockets, (which solved the problem described by the OP).
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Old 03-17-2014, 07:38 PM   #13
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Am thinking bad ground at the rear of the Motorhome.. The back up lights and turn-signals share a ground it appears. And with the ground failed the turn signals are feeding each other via the tail light circuit, also keying the rear view via the back up lights.

Of course.. this is a guess. there are other possible causes. but that's my best guess.
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Old 03-17-2014, 08:39 PM   #14
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Am thinking bad ground at the rear of the Motorhome.. The back up lights and turn-signals share a ground it appears. And with the ground failed the turn signals are feeding each other via the tail light circuit, also keying the rear view via the back up lights.

Of course.. this is a guess. there are other possible causes. but that's my best guess.
A second vote for bad tail light grounds.
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