I am working on a project, and I thought you guys could help me. I am looking for a switch driven wireless relay. / with two parts transmitter and receiver 5 channels rf .. It is going to operate in a car to control lights on a trailer behind a car. hopefully 12vdc . I want to mount the switchs in the car , so I am not looking for a fob or an rc remote . more like a pc board.. the simpler the better.. any direction will be appreciated,, Thanks for any help given...