There is a switch on my dash to turn the light on above the AM radio. It looks like there is room for another switch. Possibly an option that my car didnt come with? What was the other switch that I do not have, and what did it operate?
Brian, sorry I dont know. I tried to PM you for your e-mail to send you the pics but you had to many so I try this way.
Probably Power Antenna Brian, my guess is that the space was available to mount the switch for those cars equipped with power antenna. I'm not highly familiar with '66 Rivieras, so I may be wrong.