My PIU has built in from the factory strobes in the headlight/cornering lamp unit. Not aftermarket drilled in strobes but round spaces molded into plastic. I forget the exact name for that style. They appear to be LED. From what I can trace, the wires disappear into the harness but obviously terminated once upon a time in the center console area.
As far as "turning the circuit on" that's a bit easier said than done since I have no clue where the circuit is or what colors it's supposed to be. If I knew that, I wouldn't be asking here.
I appreciate your concern, but I do work for the police department. Well, 4 technically. Since the town budgets don't include an ACO (animal control officer) vehicle, I have to use my own and get reimbursed.
It's not cool when your chief and other officers make fun of you for having a cheap amber strobe setup, so I'm looking to as you say, add features back. I don't however get reimbursed for vehicle outfitting. That's on me.
Yes, white or amber is what I can use since it's "town business" use. Red and blue are PD/fire. I'm not going lights and sirens to an injured fox but the airhorn has come in quite handy for breaking up dog fights.
I haven't attempted to pop a strobe out yet. Figured I'd ask here, buy the parts, and only have to disassemble the works once.