Simple 2H Glow Plug Switch (1 Viewer)

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wngrog

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I helped @WharfRat fix his dead Superglow system today

After reading 6-7 threads and watching a Canuck on YouTube I decided all of this stuff was overly complicated as IH8mud tends to be.

Here are the steps to do it simple.

Test your solenoid. Isolate it from the truck. Add 24v and ground. If it clicks it works.
If no click, take it off and toss it

This NAPA version is what we used.

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Next, we changed out all of the glow plugs with 24 volt plugs.
The tops of the non OE plugs were a bit bigger so we opened the hole with a step bit on the bar. The bar is unhooked from the system back at the firewall.

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Next we mounted the new solenoid to the fender.

+ is the power from the battery using the OE fusible link and wire.

- is grounded to the fender using the other hole the OE solenoid used.

G is the wire that goes to the glow plug closest to the firewall

S goes to the 2 prong switch on the dash

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Switch was a simple 2 post rubber plug.

The S wire goes through the firewall to this plug.

The other side of this switch goes to and switched 24 volt wire you want.

I used the yellow wire in the harness going into the now unplugged timer in the driver kick panel

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That’s it. No glow plug light but you would have to be real deaf not to hear the solenoid kick on.

Also since you have switched to 24v glow plugs you can’t fry it if you have a hard time counting to 7.

Hope this helps someone.
 

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