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Pulled starter switch and everything looked good. Looked under dash and found 54 burnt through. Replaced 54 from just before the T back to the solenoid. Now, switch powers voltmeter in dash when closed, which is a positive step, but solenoid is still non-operational. Pulled 3amp inline fuse...

Thanks simp5782! I'll probably check back in with you after I pull that starter switch and look at the fried wires. From what you're saying, it sounds like I could run a 24v hot all the way from the batteries to the solenoid with a switch in between. With my torched wires, I wonder if my ABS...

Thanks. 54 and 54A are tied together and connect to the injector pump solenoid. I need to know where each of those connect from there, please. Thanks!

Finally got 5-ton running quite well with the rebuilt injector pump. Thanks for everyone's input. The only problem now is that I connected wires 54 and 54A onto the BOTTOM of the two injector pump solenoid poles and was rewarded with a lot of exciting smoke in the engine compartment and inside...

And regarding the solenoid on top...is it correct that a tandem wire set is connected to the bottom connection with nothing connected to the top one?

At a quick glance, I didn't readily see any provision for timing it. So, just plug and play? The 3 blades can just plug in any recess and it's good?

Thanks! I've removed the pump...fairly easy...found a place in East Texas and will drive it there tomorrow for rebuild. Then I'll need help to reinstall/time it. Thanks again!!!

Thanks to both of you! Please provide where to get it rebuilt of you can?

About a year ago I had the fuel injector pump replaced on my 5-ton NHC250 because the truck was barely running and had a minor leak at the injector pump "weep hole". Now it's running bad again with a much worse leak at the weep hole on the rebuilt pump. The truck probably has less than 20...