I've acquired the Piper switch and the dual element heated pitot so I can install them in my 140. I verified that the parts were the correct part number before purchasing. However, what I am not seeing in the Parts manual is any information on the wiring itself. There's a square four wire Molex connector on the pitot elements, and the parts manual just shows a two conductor dashed lined from the switch to the pitot with no number/part number or information at all. Does anyone know offhand what gauge wire this is....or where I should look for that information?