JK,I used my gp unit. It works ok but it need to stay on longer. still working on getting the bugs out.
Well here is what my problem is. It will run for about 15 secs then once I start the engine it will not come back on. If I start the engine before the cycle is done it will just shut off. With my 6.5 it used to cycle for about 2 times while it was running but not with the cummins. Not sure what I am going to do for that. I am thinking of hooking it up to my iat sensor but not sure if that will help. Actually not sure what sensor makes it cycle while the 6.5 was running so I can duplicate it.JK,
You can extend your cycle time on your glow plug controller by installing a 2 watt - 10 ohm resistor (available at Radio Shack)
It gets installed in the wire that goes in "c" terminal on the 85-93 glow plug controller.