Wiring for windscreen
hi, all you are doing is using the feed from the rear window to also power a new relay, i mounted my relay (40a job) near battery, and with nice heavy feed wires to the wing. I fed the relay coil wire through the rear of the glove box with stiff wire and pulled it through, The relay then closes two fused spur(s) which are conjoined at the relay output, from the battery to the left and right side of the heated window. Thats it, the good thing about that is it has the timer in it as the heated window is a timed switch, so it switches off and on with the rear de-icer element. I Don't have a schematic but can put one together if you don't catch what i'm saying.