Got tired of hopelessly searching for that lost can of soup in the bed of my truck, scrounging around to find where my flashlight went, all the while being yelled at by my wife because her hands were full and I wasn't opening the door quick enough. Thus....my bed light mod. Thanks to http://www.oznium.com, cost me $15 after shipping for four Superflux lights and a switch.
First, installed an add-a-fuse to the 7.5 amp Alt-S fuse slot in the main fuse box. I wanted a constant hot to be able to turn the lights on an off at my whim.
Ran the power wire through the fire wall to connect the switch.
Removed the panel under the steering wheel for easy access to where my switch was being installed (just beside the Clutch Cancel button).
Drilled a hole with a 3/4 drill bit to install the rocker switch. Installed the switch with the prewired connectors and some weatherproof butt connectors (although due to being in a hurry last night didn't get around to heat shrinking yet).
Drilled holes on both sides by the tailgate latches to install the lights. Took much trial and error to get the holes the size I wanted--wanted a nice snug fit with a specific depth. Tucked the resistors behind the tailgate latches by loosening the latch, tucking the resistors, and re-tightening the latches. I used the bottom latch bolts as my ground for the lights.
Removed the taillights to run the power wires, also connected with weatherproof butt connectors) for the lights behind them.
Split the power wire to run one power lead to each wire using insulated spade connectors.
Ran the power to the right side light under the bed cable tied to existing wire loom.
Ran the main power wire from behind taillights up the inside of the fender through the back wall of the cab, under the door sill panel and connected to the rocker switch. Sorry, didn't think to take a picture of this.
Reinstalled the lights, superglued the lights in place, and turned it on. Pic with switch turned on.
And of course, the finished result. Pic from about 10-15 feet behind my truck.
Hope you enjoyed. I know I was tired of seeing everyone else having the option of lights in the bed...color me jealous, but I wanted the same.