I don't think you can use just one starter switch, since the ignition must also be switched to ON - two separate functions. You could rig an IGNITION ON/OFF and a STARTER button.

It's probably cheaper/easier to go to the junkyard and find another switch with a key (hopefully)..... if you have some trucks in the local yards.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum