Bigassfireman
Member
I have searched the threads already open and am even more confused now. My buddy asked for help wiring up his light bar and siren. I took a look and think I may be in over my head. He has a Whelen Edge Ultra 9000 series that was a Massachusetts State Police bar. He has a Whelen BL 627 controller/siren. I can not find the wiring diagram for the bar online. It has two larger gauge power and ground wires wrapped in black and two medium gauge power and ground wrapped in gray. It also has another set of three wires wrapped together. Does he have to have this controller to make the bar work? Also, the wiring harness has had a little too much heat through it. What are the odds that the unit isn't damaged? Any help would be appreciated. I have no experience with either of these units.