Tell you what, if you do get the Comagination headlight kit, be prepared to do some wire splicing. The Rock, being that it has two separate lights, doesn't have the usual headlight connector. So, what would normally be a plug and play operation turns into a wire tracing and splicing job.
I thought about the best place to splice the unit in (it's not very large, about 1" diameter by 1" high), decided that I didn't want a wire mess right behind my headlight, so decided to pull the tank and splice under there.
The pain was tracing the wires so that I could cut them and splice in. The positive was relatively easy because it was the only white wire running through that wire lume, but there were like five grounds, and of course since they are all connected... (Ah... to ground) trying to probe with a multimeter to trace the wire didn't work. So, had to manually trace the wire, which pretty much meant slitting the casing off the lume almost along it's entire length from the headlight to under the tank.. So, what should have been a 15 minute job turned into a couple hours by the time I had the wires traced, the unit spliced in, and the wire lume taped back together.


