few questions about electrical switches

hi, just few questions about electrical switches for my 1975 Plymouth Valiant Brougham
for head light, on year one all the switch knobs and nuts are labeled for 1963-1964, will it still work with 1962-1976 headlight switch/dash, or swap meet/wrecker part
1962-1976 A-body Headlight switch.
Headlight switch mounting nut for 1963-1964 A-body
Headlight switch knob for 1963-1964 A-body models
for wiper any good place to get a new switch, i believe mine is a three speed but the switch and nob are missing, or once again, swap meet/wrecker part