Cletis,
Please take a look at the wiring diagram for a 56 truck with a 235. Also check out the rear of the ignition switch. It does in fact have an Ign 1 and Ign 2. The Ign 2 is connected to a terminal on the foot starter which gives 12 volts for starting.
Fred

1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine