[Healeys] Tachometer wiring BJ8

[Weston Keyes]

Hello Folks,

    I am wiring up a Tach that I didn't disassemble. I see a male spade
connection on the back of the case and on the opposite side of the tach I see
a brass machine screw. Both connect to electrical components inside the tach.
>From the wiring diagram it looks like one white wire goes to the coil and the
other to the ignition switch. Which wire goes to which terminal?

Many thanks

Wes Keyes
York, Maine