| the only thing i know of that Webasto makes is, fuel-fired heaters. and they DO work. turn it up more than 1/2 way and it'll chase you out of the truck within the hour. they use a combination of diesel and 12 volt electricity on your normal batteries. but, you'll definitely wanna get up in 6-8 hours and start your truck to charge em back up.
I've seen small a/c wall units hanging out the passenger's window. if you don't mind adding extra batteries, get some yellow-top Optima batteries, a big inverter, and wire in a battery isolator. that way, you use the extra batteries w/o touching the truck batteries. flip the switch, start your truck, and harge em back up. Optima yellow tops are deep cycle batteries, so they're designed to be run down and they have a slower drain rate than normal batteries. |