^^^ DITTO ^^^. If the higher wattage was just need on 1 off things at locations, U could get a full sine inverter and just put alligator clips and run off of Battery. Or, U could wire into battery also with proper gauge wire etc.,. Dean2 could tell U the wire gauge depending upon how much power U R trying to pull. DO not try to run off of the skinny low voltage wiring in these trucks, U may not be happy.