I have a 1982 300sd,the RPM guage stopped working, the light that used to lighten up the gauge cluster/shifter area and climate control does not work anymore, could this be a electrical problem? My antenna does not go up or down so i don't know if i need a motor or if it is a electrical problem effecting the lights and that. all of the other lights work fine in the car though so it's confusing. Anyone have any good advice?