66pontiacguy
Greetings All :
I purchased a Riverside 195 Retro trailer last Fall, and it is truly a great Travel Trailer.
My Wife is a very light sleeper. She asked if we could put a rear roof vent mounted fan for some "white noise", that will allow her to hopefully sleep better.
I took the plastic panels off around the rear roof vent, and I found that the Folk's at Riverside kindly ran a red and white electrical wire back to the rear vent. The wire just seemed to be a loop wire, as there was no pig-tailed end on it anywhere. I cut this wire, and stripped the plastic coating back a bit to bare the wires for testing. To my surprise, I expected 12 volts DC to be across the wires, when in fact it only measured 0.43 of a volt. I took the trim off the bathroom vent, and tested the voltage at the fan motor, and it reads 13.2 volts DC. I did notice that there were a number of empty fuse slots in the electrical breaker panel, so I installed 15 amp fuses in the 5 empty slots to see if that would allow current and voltage flow to the rear vent red and white wires, but to no avail, as my volt meter still only showed 0.43 VDC, which will not start the new 12 VDC fan motor that I have here to install.

Any ideas on what the electrical issue may be here ? Your earliest reply would be very appreciated as we will be travelling soon with the Retro.

Thanks in advance for anyone who could perhaps help with this small issue !

Jim Oke
705-559-8358
flyinglow@nexicom.net
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TravelerGuy
Hi Jim,
Is it one wire, or a pair of wires that form a loop?  If it's one wire, then you are measuring to the frame?
You might try plugging the trailer into a vehicle, and turn the vehicle lights on and press on the brakes.  Perhaps the wire is going to the rear lights, brake lights or the side clearance lights.  Don't know about the .43 volts though, maybe it's some leakage current from the braking system...? 
     Or maybe it's part of the interior lighting circuit, so make sure you turn on the light switches on the black control panel.
     Last crazy theory....  maybe (if it's two wires) it's a speaker wire going to a ceiling speaker..?

What a fun puzzle!  Let us know what you find!
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sunvalleyjoe
I think the .43 volts is the meter floating some digital meters do that on dc voltage. 
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Tom
Try measuring each wire individually to a known ground. Voltage, then if no power, resistance.

Forgot to say check AC and DC. Plugged in for AC.  
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Shannon
Could it be wiring for a rear view camera? I’m not sure if your model comes with that?
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sunvalleyjoe
I think camera would be coax or some type of communication cable. Retro has some very strange wiring techniques . seems like newer Retros are worse than older ones. GBA!!SVJ
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TravelerGuy
Power to an optional backup camera is a good theory.  If so, I'd think if you removed the 2 screws on the load center cover, and looked around on the right side, where the DC fuses are, you might then find a similar wire, unconnected and tied off.  I could imagine Retro running one or more wires for optional things, and just stowing the source end right behind the DC distribution board.  Might be worth checking.
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sunvalleyjoe
some trivia we bought the Retro used. It had a 12vdc cig lighter installed in dining area . Some times the recpt worked other time it did not. Come to find out previous owner added the plus but hooked it to power for water heater so when switch for water heater was turned off recp did not work. So I came to conclusion previous owner should not have been do electrical work on the unit. I took care of the issues by running a dedicated circuit which we call in the trade to the plug. PS i have made many of dollars on service calls from people trying to save money. GBA!!SVJ
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