ididit Retrofit Steering Column: 1967 Mustang - Manual (Page 5)

4.
The first few tasks, you can do more easily with the column on a work
bench before you put it in the car!
Wiring
Included in the kit are male and female white plastic connectors and
male & female terminals. The wiring from the switch can be made to fit
either this connector OR the original connector. The pins are the same
size as the original.
Using Original Connector: (Easiest!)
Remove the pins from the original
wiring block on the original steering
column and insert the wires on your
new steering column into their proper
location on the original block. *The
color codes should match up. You
will more than likely have to use
a tool to remove the pins from the
plastic connectors. Figure 8 shows two types of tools commonly used.
Using All New Wiring Provided:
Included are male and female blocks along with the necessary terminals
and wiring diagram. You will have to remove the pins from the original
connector off the car side of the harness and insert the pins into the back
side of the new block provided. Insert each terminal completely until
each one snaps into place. You can verify it is secure by lightly tugging
on it. You may need to bend the locking tab back out slightly. Then you
will also install the new block on the column harness. Again, matching
color codes*.
Wiring Installation:
(Figure 8)
*See chart on Page 5