[muff34]

I have read this somewhere before but cannot remember where. anyway pop the kick panel down by your left foot ,apparently there is an electrical junction in there for various circuits. maybe you`ll find some corrossion it there to clean up . Other than that I`d say bad ground somewhere. One could say it is the multi function switch,but with the funky door locks i would tend to rule that out. Let us know if you figure it out ...........thanks