I have a 2021 fuel 352 I bought new last year and has the pre wired Furrion back up camera mount. I just bought the Furrion fusion s 7” and mounted it up only to have no power. When plugged into the truck it works great, when plugged into the trailer no power and no blue light. I have my running lights on and all trailer lights on. I have saw some stuff on the internet where people are talking about some fuse and one said his wiring was backwards, neither I have checked and did not have a multimeter with me at the time to check 12v power. Thought I would ask around before going back out there if anyone has ran into this, very frustrating. Thanks for the help.