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Well....it has been getting colder where I'm at now and after starting the output of the relay where it's distributed to the GP's shows about 14.4 volts as well but my system still does not do an "after glow" on and off cycle. I thought the controller card was supposed to do this but no go on my...

So...while looking for another issue recently posted on the forum I double checked by voltages at the GP relay both before and after starting the truck while the GP relay in on providing voltage to the glow plugs. The one thing I found that still baffles me is once started...the voltage being...

Good catch... I was mistaken... I wound up going to the junction block on the firewall... That is what I meant to write...:)

Awesome info...! Thank you...!

Hello All, I've been reviewing some posts on here about the proper operation, etc. of the Glow Plug system including the controller card and even though I'll probably sound like a goof for admitting this I finally realized my current system does not work correctly...LOL. A little history...