Didn't the original radio on/off switch also control the antennae? One of the PO's added a switch to control the antennae when the radio was replaced with an aftermarket one.

Does anyone have a pic of an original switch? Just curious what mine used to look like.

77s (the OP's year) and 78s (yours and mine) were different.

Cool stuffs! does anyone know how to rebuild a power antenna if its broken or stuck as is mine?