It's also pretty simple to run your CB power off your battery, under your seat. There are plenty of grommets to get a wire into your battery compartment from the interior of your truck. Since you'll have power all the time, remember to turn off your CB when not in use for extended period of time.
I finished a CB install today on my D90. To make my life easy and keep the wiring under control, I used an Audiopipe power distribution block, attached to the (+) terminal via an Audiopipe positive battery terminal, to hook up my CB power. (I'm also adding lights too.) To learn more about this, see ExpeditionExchange.com under Products.