The oscillating lights are quite rare, nice find.
It is quite possible that all you need is 12 volt power, the strobes and the halogen directional modules were wired with the same wires many. You may not be able to see through the fluted lenses to tell if the end and center lights are strobes or halogen, which means you may have to remove at least an endcap. The center and two end 7x3 directional lamps will have a 3 pin/wire plug for strobes AND halogens, the halogens just don't use the center white wire. You have to determine which you have.
Total you should have three of those three pin connectors and two total four pin connectors (for the oscillating lights). Those 4 pin plugs will each have two black and two red wires. The black are ground, the red power. One plug does the inner pair and one the outer pair. In the four pin plugs you can put 12v to anything red and ground anything black.
If you have strobe 7x3 lights you just hook the three pin plugs up as they are wired to the strobe supply. If they are halogen you ground the one wire (usually outer one that's not red or orange) and put 12v to the other (usually the other outer red/orange) wire ignoring the center wire. If they are halogen they would still need a flasher or else they will just come on steady burn.
The oscillating modules themselves were quite prone to failure at the point where the wires twisted back and forth as the lighthead oscillated. If you have any non-working components let me know I have repaired a lot of oscillating whelen components.
If you ever want to sell this bar let me know, I buy these whole and I also buy just the oscillating portions or will trade them for the rotators that go in their place. Let me know if you have any other questions.
