Try this for a starting place. There are supposed to be two switches there at the shifter. The one closest to the body & shifter is just for the back up beeper. Orange and pink wires go there - it doesn't matter which wire goes to which of the 2 terminals on that switch. The other switch, closer to the engine, has 2 functions. When the switch is in it's "normal" (relaxed) position it grounds the ignition circuit, when it's engaged to enables the solenoid through the green wire by way of the top microswitch in the control box. Look at the diagram. It will probably show you better than I've described it. Black at the top, green in the middle, white at the bottom. The pink and orange would go to the other switch - if you want the reverse beeper. Many people disable that.
https://buggiesgonewild.com/attachme...1&d=1570824822