Ignition toggle and starter button instead of key

A test light would tell you all you need to know to accomplish that

 

You better start getting used to spending money on stuff you need for that thing. A ignition cylinder is nothing in the scope of what’s coming at you. I would never buy a used truck that the ignition was all hacked up. That’s a fire waiting to happen where you will be sleeping. Especially if you think you need a working diagram to do it?

But it’s your truck, do as you please?

 

Drop it off at a dealership to get some work done on it will be a nightmare. Mechanic will be trying to figure out how to start it for 30 minutes, just trying to run it into the shop.

My B model Cat had a factory Kysor low oil pressure-high water temp shut down system. It had a factory override toggle to start the engine. Push the toggle until oil pressure built.

As years went by fewer and fewer Pete/Cat mechanics were familiar with the system, I would get a call (we can't get your truck started)

I ended up taking a rubber band and holding the toggle in the override position every time I dropped the truck off where a mechanic had to start it.

 

Every now and then we have a mechanical engine get dropped off at our shop to work on. Poor young guys have no idea of a murphy gauge or a manual pull shut off. "I parked in the yard and the jakes stayed on and killed the engine??

 

I would buy ignition cylinder and be done with it and I am seriously a cheap #######.
Don’t know why they ever strayed away from having starter switch under throttle pedal or on the dash

 

The ignition cylinders are very vehicle specific. Some sets include all ignition door and hatch cylinders. I had driver door cylinder get wonky so i just swapped it with passenger cylinder..
*NEW* SET of KENWORTH IGNITION w/ 2 KENWORTH LOGO KEY part # 596808KW | eBay