neutral reverse switch or what ?? help

btw im using a console shifter out of a 77 charger which has no provision for a connector or switch of any kind for the neutral/reverse. i am just needing this thing to start at key.im not worried about reverse lights or potentially starting in gear .this is my DD and i cant be out in the cold with the hood up trying to start it in the morning before work lol. and yes that is snow next to the relay in the above pic! no worries tho that stuff is really dry.