I bought some aftermarket spoon mirrors powered and the wiring came with 4 wires, but the car has 3 wires on the power sideview mirror harness. the spoons came with a black, brown, blue and white. i wired them up closet to the color of the original harness but when i try to put the mirror in position the directions are either backwards or doesnt work. is there a layout somewhere or that somebody knows that i can look at?