Speaking of fans - must be the summer heat - I picked up this RoadPro USB fan at the truck stop, for $18. It draws about 0.2 amps, the clamp interfaces well with an 80 series grab, and you can take it to your tent or RTT with a power bank. IT is a little on the noisy side at its single speed, so may look into a hack to calm it some. The cord is just about ideal length to reach down to the USB power point mounted ln the panel there