Federal Signal Jetsonic Model J Series B project

So continuing on the same vein of Jet series bars.
Federal Signal JetSonic Series B lightbar... motor reads 3/86 which puts this bar at 34 years old.

The interior of this bar definitely needs some TLC, and the previous owner decided to make some modifications that I need to figure out what and will never ever know why.. lol

I think the Blue looks good on these bars. And I am on the lookout for a salvageable set of jet series domes..