Gosh... Where to begin....you don't mention where you are or what your state/federal requirements might be or what type of plates you are trying to get. They all have some impact as to what you might need. I'll assume you are somewhere in the USA and going for the SEMA style registration.
To the rear
License plate light (same as running lights)
Fuel gauge?
3rd brakelight?
Front
Horn
Interior
Headlight switch
Wiper switch
Turn signal switch
Instrument panel dimmer?
Ignition switch
Brake lightswtich
Emergency brake switch?
Accessory outlets for phone and GPS?
Horn switch
Idiot lights?
Just a few quick thoughts. You are going to have fun at this stage....
_________________
Chuck.
“Any suspension will work if you don’t let it.” - Colin Chapman
Visit my ongoing MGB Rustoration log:
over HEREOr my Wankel powered Locost log :
over HEREAnd don't forget my Cushman Truckster resto Locostusa.com/forums/viewtopic.php?f=36&t=17766