I installed a 400 watt 12v/dc-110v/ac inverter in the truck dash slot that was fomerly occupied by a useless cassete tape deck. It's a Cobra inverter and it works very well. Keep in mind...unless you want to limit yourself to 150 watts, which is the max you can pull from a 12v cig/aux power port, then you will need to install some heavier wires. I already have a 700 watt stereo system with #4 power wires in the cab so the inverter is tapped into that. 400 watts will run lights and small stuff but not more than 3-4 amps in ac terms.