Why Would Peak Back Up Camera Turn Off When Brakes are Applied

Question:

Had wired to my Dodge worked ok took it off Dodge and installed on a 2007 Ford F-150 works ok but when you hit brake it goes off any solution

asked by: Tom S

Expert Reply:

Does it go off with either blinker too? If so, then the problem is theres a short on the wiring from the stop/turn signal to the power wires of the camera. Otherwise the problem is most likely a weak ground and when you apply the brakes the insufficient ground shows up and cuts the camera off.

Solution for this is to try jumping the wiring of the ground to a known working ground and see if that helps.

expert reply by: Jameson C

James H.

8/8/2020

I have a 2013 Toyota Tundra hooked up to a 2019 Keystone Premier RV with a Haloview Rear Camera and Side Marker Cameras. I replaced a Yuwei Rear Camera that worked great but wanted side cameras. I have excellent picture quality out of all three cameras when parked, but I lose the rear camera when I push brake pedal. Side cameras hooked to front amber lights not impacted. Tested Toyota 7 way connector with tester - truck ok. Every time I push brake, camera signal lost on rear camera. Occassionally, left signal causes rear camera to go off. A transmitter is connected to the rear camera through a 12 m cable run on the trailer roof. Power to camera and transmitter is supplied from Furrion wire at rear (spliced in). The transmitter has a blue power light that stays on but the transmitter WIFI blue light goes off when brakes pushed. Rear top marker lights seem to be slightly dimmer when push brakes. Next week I am going to replace all of the incandescent lights with LED where I have the red light covers to reduce the load (Yuwei camera worked great, maybe I have added too much load?). Last resort would be to tie into one of the amber lights since the side marker cameras work great. I really thought I was done with this job. Any ideas?

Jon G.

8/18/2020

If your rear camera is connected to a continuous 12V power source then I'm not sure how pushing the brake pedal would cause that circuit to be overloaded. Even if the power for the camera is tied to the running/tail lights it would still be different than the stop/turn signal. You can try swapping out some lights so that they are LED but I'm not sure if that will help. You might try looking at your trailer side connector for any debris or corrosion, as well as any places where your wiring may be damaged.

James H.

8/18/2020

The Furrion wire was delivering 9.9 volts to rear camera which dropped to 7.9 volts when brakes pushed (with trailer lights and side cameras running). Connected camera to rear center marker light and had slightly better voltage (same circuit as side cameras) but not good enough. Front side marker lights were getting 12 volts in both situations. That’s why those cameras worked. Too much drop on the system by the time you get to the back of the trailer. Ran power for rear camera to terminal block at front of trailer and everything works great. Replaced halogen bulbs with LED lights on trailer several days later when received them and rear lights that use to dim when brakes pushed stopped dimming. No measurements on volts after installing led lights because already tied camera to front of trailer. Camera might have worked at back with led lights installed on all outside lights. It’s all about voltage. Magnetic brakes are biggest draw on system. That’s why voltage drops when pushed brake. Thanks for your comment.