Wondering if someone can help me out with the wiring of a stock Chevelle fade switch for front/rear speakers in a car?The unit has 4 wires,a green on one end,a black on the other end and 2 wires,a black/green and a black/white together in the centre.I've tested it using a battery and light bulbs and can get what would be one speaker at a time working but never both speakers together.
Anyone have any ideas.Thanks.....Wayne

Jim Lewis