my truck has a toggle switch on the 4x4 shifter casing. the guy i got it from said you need to flip the switch up to on, then the 4x4 will work. i did it and it worked fine, without the swith on it didn't work, so i went with it. but today i switched it on and the 4x4 case didn't light up like it did before. so my ? is what is hooked up to the switch so i know what to correct. oh ya, it is a shifter for the 4x4 if that helps. hope you guys can help me out with this one.