Hey, Jonathan.
The on/off switch is built into the housing of the lefthand light. I think there are a few members here that have moved the switch to their console. (I've been too lazy, but will probably do the same).
The hardest part of the install for me was snaking the wiring through the the lightbar itself. Otherwise, you just bolt the sucker on (very simple)...and then plug her into the socket hiding under the tank.
Let us know if you get stuck.