For those unfamiliar with 80's Imperials, the garage door operator built into the sun visor activated a proprietary base unit in the garage. The base unit provided momentary contact to activate the pushbutton circuit of any door operator. My base unit is long gone so, someday, I plan to use the sun visor switch to remotely activate the pushbutton of my door transmitter...hardwired in the glove box or velcroed under the dash somewhere. I remember being awed by the electronics of the 80's when they were new...the built-in garage door operator seemed high-tech at the time. Phil Brust Jefferson GA 73 & 82 Imperial