Finished up my Glow Plug and GP Controller tonite. Works slicker than snot on a door knob. Only thing is I forgot my camera for pix in operation. Will get them later. As you can see it test's all 8 GP's at the same time or one individually. I have a trailer brake amp meter on there, goes to 15 amps full scale, checking one GP it pegged the meter and more. Wire size to each GP is 12 AWG. With a Laser Digital thermometer the GP tip temp was 1350* fully on. When cycled the controller stayed on for 15 seconds (garage temp was 51*) then it was ON/OFF for about 10 seconds. Will have to time it with a stop watch when I take the next pix. The testing was done with a fully charged battery with a charger hooked to it. The controller is the earlier style, with the small circuit board the one on the right.
By the way the GP threads are MM10 X 1.0
By the way the GP threads are MM10 X 1.0