88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
If memory serves ( On my 73 )
There is are two wires that goes to the REV switch
Pink & Light green
Pink= Ign power
Lt green= run to rev lights on a 2 pin connector.
This is a single connector thru the firewall and down to the tranny ( Pass side ).
There is a flange which mounts to the Transmission side cover plate. The flange mounts the switch and the switch gets actuated from a piece of wire ( read carb linkage bent wire ) going to the reverse lever on the tranny.
So it shouldn't matter what linkage you have, the connection is from the tranny to the mounted switch.