Just to expand on what Robert offered. There should be a bracket mounted to the lower bolt on the solenoid.
That bracket holds the outer portion of the cable in place. As indicated there is a special bolt with a shoulder type washer that is installed on the OD engagement lever. This tightens the inner cable but allows it to pivot on the lever when it is pulled/pushed.
You can fabricate these components and drill a hole in the bolt just below the head.
If you have an assembly manual, refer to RPO 315 sheet 2.00
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