Excuse the post above.
So lets talk about terminology,
The box picture controls LED lights and siren. There probably are not any strobes on your vehicle and they are most likely all LED with a "strobe" light pattern.
It's real simple
Connector J2 pins 1,2 and 3 are turned on progressively with the slide switch
Connect the power wire of the LED lights (with integrated flasher) to Pin 1 2 or 3 and the ground of the light somewhere near the light, or controller whatever is easiest and you will be in business.
I realize this is an older post but hopefully it helps you if you haven't done it yet!
Check out this link to the install manual which shows which connectors are which.