The lightbar that you have, was called the 2300 series. It was Code 3's Economy lightbar which had dumb heads and economy LED's too (Didn't last long) Same heads as in the XF2300 series or Dog Bone when it first came out. The LED's were flashed by a 700 or 710 flasher, that was the only way to flash those dumb heads. to make the patterns more appealing my shop had made different wiring harnesses and changed then to different lugs on the flasher. The 2300, was built on and in the 2100 platform only they didn't change the decal indicating 2300. So unless I'm wrong those heads shouldn't have the 2 prongs or the 2 foil tabs to change flash patterns.