95 ranger, 2.3, std, no crank no start issue
So last week the truck was running fine. Went to local pizza place, came back to the truck, stuck in the key, pushed in the clutch, no crank. All the dash lights, radio, door buzzers, dome lights working fine.
Long story short, I was perplexed. I tried jiggling gear shifter around, stepping harder and softer on the clutch pedal, still no crank. I got fed up and left the key on, E brake on, trans in neutral, popped hood, got out, and jumped from the positive battery terminal to the activation wire on the fender solenoid and boom she was running. Down the road I went.
Yesterday key start was still not working so I threw some parts at it. New ignition switch...didn't change a thing, new clutch interlock switch, didn't change a thing. I should mention battery tests good, starter good, starter relay(fender switch) perfect, I also cleaned all terminals and starter connections. This is a Texas truck with no rust anywhere. Also should say that there are no codes but the airbag light does flash randomly.
Now I was fed up, and I rigged an intermittent push button switch from the battery positive terminal to the starter relay activation terminal on the fender, with the push button neatly set into the panel below the steering column. Now it starts every time when I turn the key on and push the button. What the heck? Anyone have a suggestion? Is there a neutral safety interlock switch in this truck's starter circuit? Perhaps there is a switch on the transmission that's screwed up? What else causes no crank on this truck? Thoughts anyone?