I have a 2000 s10, the back lighting lights that you can dim got really dim then something smoked literaly and the lights will not work. I tested the fuse to see if it was blown, (was not) but both sides are showing cotinuity (grounded to car on both sides of fuse) i need to know what the colors mean like pos. or neg on dimmer swith panel and gauge cluster plug colors and wether they are pos. or neg. I heard that you can take and piggyback a wire to another. thanks ahead of time.