New Wilson switch = no start

[Canadianmarty]

So I just followed I think Greg’s Wilson switch instructions where I ran power off the glow light to a NO push button and then down to the higher voltage side of my superglow harness, as well as a line going to the glow light which the other side goes to ground.
Superglow system is still connected, the button just overrides the high glow side (I have 10.5v plugs in)
First I hooked this system up totally loose and out of the dash with no solid connections. Worked great, vehicle started.
Next I strung it all through the dash, used proper butt splices and tried it again, worked great and vehicle started.
Then I put my dash back in, kick plate back on, try again, no start. Turns over, Wilson switch still operates relay and light, Edic arm still moves to start position, but no fire.
Pulled the kick plate and dash out, connections still good and nothing grounding out. No start.

I wonder if I burnt out the glow plugs somehow?? Will check tomorrow

 

[Canadianmarty]

Ok just for all who might look at this in the future… I’m not sure what went wrong but something in my superglow system failed. When I turned the key to on I was getting full battery12v to the glow plugs without the relay going on, and it wouldn’t turn off until the key was off. So my no start was due to burning out all 4 glow plugs. Upon disconnecting the superglow system I have proper manual control over the glow cycle but it is seeing full 12v.
It used to get 9.5v. Does anyone know where this resistor is? I don’t think it’s in the superglow system because when I was testing my button it saw 9.5 with the superglow disconnected.

 

[Bandit_guy]

I'm not really sure how you set up your Wilson switch but if you have 9.5V plugs you probably have super glow. The Glowplug timer as it's called in the manual is where the resistance is to drop the voltage. I had some trouble a few years ago with the glow plugs when I was messing around with a wilson switch and burned out all four. the power stayed on to the glow plugs whole time the truck was running, at the lower voltage and in a matter of 30 minutes they were toast. Here's how I wired up my Wilson switch, it's a 24 volt system but the parts are pretty much the same.

I soldered a wire into the "on" side of the Glowplug relay provides the full 24 volts to the 14volt glow plugs to a button with power on it. When I push the button it closes the relay and sends full power to the glow plugs. Just small wire and a button wired to the hot side of an existing circuit that is hot when the key is on I can't remember which one I used.

I also wire a 24 volt LED light from the glow plug bus bar to ground which tells me when they have power and how much. When it's bright it has full power when it's dim just 12 volts. I haven't burnt out the plugs since.