i have a 1000 watt one waiting to be installed. i guess its pretty simple. just hook pos to pos on batt and neg either to the batt or to the chassis. Dont forget to bolt er on down and i was also thinking of putting something over the terminals to cover them just incase nothing connects em to make em start arc-ing.
I have a 1200 watt inverter bolted in the right rear side wall of the bed. I ran 1/0 guage hot & ground wire from the battery, under te truck, into the bed through a cavity behind the right taillight. Some inverters will have chassis ground. Use the biggest wire you can, inverters take ALOT of power.