For sale is a neutral safety switch which properly fits and works for 1961, 1962, 1963, 1964, 1965, 1966* and 1967 Lincolns.
For 1964 and 1965 Lincolns, just plug it in.
1966 Lincolns require use only of the vacuum brake release nipples, so there is no body wire harness connection.
1967 Lincolns- see my other listing for this one year only switch.
Call if you have questions.