I want to add a camera to the rear of my 26' stick/tin travel trailer behind my 2019 Dmax, with the camera powered by the tail light circuit. There are many horror stories of aftermarket systems not working well, especially while underway. I can't afford to experiment with something this costly, so I just decided to ask the (apparent) leading manufacturers for recommendations for my specific set-up and distanced.
While both companies gave me recommendations on the systems that should work for the length, etc, both had unusual and different words of caution about the quirks in the wiring system on 2019 GM products.
Furion said, in part: "The only additional thing to keep in mind, is that you have a 2019 GM vehicle which restricts power through their 7-way, not allowing an adequate power to function any 12V accessories, including cameras, if you decide to power them using the tow vehicle, instead of an on-board RV battery. I see that you have mentioned using the running lights for power, which would require the adapter for the 2019 GM. The adapter that we have that resolves the GM power issue can be found at the web address below. " (the adaptor is a pigtail between the truck and trailer 7 pin connectors) https://furrion.com/collections/all-...h-power-switch
ASA / Voyager said, in part: "Since you are using a 2019 GM product, you will need a filter to filter out the PWM (pulse width modulation) they're using. Our products, Furrion's products, and all other systems would be affected by PWM. This filter will remedy this and allow you to use our products with your new truck" (oddly enough, the filter they recommend is a link to Amazon, not ASA).
I asked Furion if their concern about not enough power being available had to do with the PWM noise in the light circuit (as highlighted by ASA), and they replied that their concern was something different from PWM.
I can maybe understand some feedback noise in the tail light circuit to determine when bulbs are out, but I can't imagine the tail light circuit not having enough power to run a camera.
Has anyone run into either the tail light circuit noise, or the not-enough-power-available-to-run-the-camera issue, when adding a camera to a travel trailer???????????