should be fine if you don't drive in the wet much, but road spray wouldn't be friendly to the coil of resistor wire, which can corrode easily - carry a spare
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
