Installed the Darla's on my 15 FTLRUSE. I mounted the to the the engine guard using the Harley Daymaker fog light mounts. The wiring is not bad, ran my power and ground to the battery, with a fuse at the battery, there are wires that run to both lights from the dimmer control, which I mounted into the right glove box, just because I wanted the switch hidden, and I tied on wire into the high been headlight circuit, that is the trigger wire that once you turn on the high beams, it automatically puts full output to the Darla's, and let me tell you at full output you can light up everything, brightest lights I have ever used. The wire I tied into the high been circuit is only a trigger wire, I actually cut the wire on the bike and soldered them all back together along with heat shrink tubing. That connection I made under the fairing close to the headlights. Been on there for over a year with no problems.
Pic of the mount I used, not the most attractive, but function is well worth it.
Pic of the dimmer control mounted in the right glove box.
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