$(KGrHqR,!h!E1fmT3HbLBNnf4cSnWg~~_12.jpg
(from ebay description not mine) starting bid $75
Federal Signal JSS Lightbar Controller for use on JetSonic Lightbars. This controller is almost Impossible to find.
These were the type used on Special Service Ford Mustang's like the Florida Highway Patrol and other department's used.
I have no way of testing it and is sold as-is.
It appears to be complete and has the wiring harness & mounting bracket.
Thanks for looking.