thing to check is the 1 amp fuse on the back of the clock. This can be removed
without clock removal. Also make sure there is power on the red wire from the
ingition switch. Second thing make sure the 5/16 nut is tight on fuse holder on
back of clock. If all that is ok remove radio and then adjusting cable knob and
retainer nut. There. Are 2 regulater slot screws on clock. It is best to have a
short screw holder for instalation.