Does a heated screen need to be on a timer as i am thinking about fitting one but as far as I'm aware ff heated front windscreens turn themselves off after so long but rears don't I'm thinking this is because the strips in windscreens are very thin and if left on will burn out is this correct if so how do i make it switch off by itself with a mom-off switch??
I'm thinking i need some sort of timer relay or something but i haven't got a clue about auto electrics just trying to use some common sense which don't happen often