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Old 12-03-2020, 07:41 AM   #1
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Rear View Camera

I'm changing the backup camera to a rear view camera with a 7" monitor so I can know whats happening behind while driving. My question is where do I pick up the 12 volt source that is energized when the ignition key is on and is the rear camera connected to the same circuit? This is on a 2015 Coachman Prism.
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Old 12-03-2020, 10:46 AM   #2
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While you are behind the dash, find the power supply to your radio and tap into that. The fuse will protect both your radio and display unit. They don't take much power.
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Old 12-05-2020, 01:34 AM   #3
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Quote:
Originally Posted by Psxace View Post
I'm changing the backup camera to a rear view camera with a 7" monitor so I can know whats happening behind while driving. My question is where do I pick up the 12 volt source that is energized when the ignition key is on and is the rear camera connected to the same circuit? This is on a 2015 Coachman Prism.
Most RVs tap the rear CLEARANCE/ RUNNING LIGHTS for camera power for REARVIEW; then HEADLIGHT SWITCH controls Camera Power and IGN controls Monitor screen power. PARKING OR HEADLIGHT position will then power it.
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Old 12-05-2020, 08:07 AM   #4
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Not sure if you meant the brand is Rear View Safety? If so.....With my RVS unit, the camera and monitor are powered by the small signal box, which I mounted under the dash. So with mine there was no dedicated power needed for the camera itself. And as mentioned above I tapped off of my radio 12 volts to the signal box.

Camera and monitor are on full time while running and I used one of their attachment arms and removed my useless rearview mirror and mounted the monitor on the stock windshield mount.
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Old 12-05-2020, 10:42 AM   #5
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I installed a wireless unit that I connected the camera to the running lights and the monitor to the fuse panel with an inline toggle switch that I can turn the monitor on or off.

I liked it so much I bought another unit for my boat so that I can see the tailgaters behind plus am able to view when backing the boat down the ramp to launch.
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Old 12-05-2020, 05:31 PM   #6
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Sprinter chassis, be careful where you pick up power, Mercedes is finicky. Mercedes actually provides a ignition on circuit for coach use, its the circuit that is usually used to operate the chassis to coach battery charge relay.

I would talk to Coachman and see if they have any recommendations.

Is there a dedicated forum for the Prisim? ask there as they will be familiar with what works and what doesn't.

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Old 12-13-2020, 05:25 PM   #7
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On my 2006 29B Winnebago I wired the camera to the hot wire that came out of the location where the old camera was. This is wireless so only needed the positive and negative wires at that location. Other wires were to connect the camera to the monitor. For the dash monitor, I used the power lead that operated the old monitor and used them. The wireless signal from the camera to the monitor is great. The image is so much better than the greenish screen of the old monitor.
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Old 12-13-2020, 06:29 PM   #8
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Has anyone found a rear view camera that is NOT a wide angle?

It seems most are 130 degrees or so. I want one for my second rear that is a narrower field of view to see traffic farther back.

I have one now, but it's a back-up camera. Wired in with 12 volts and a video feed to my dash display. So any camera that uses 12 volts would likely work.
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