ididit Retrofit Steering Column: 1965-66 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 on the chart (pg 5).
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 per the chart*.
Wiring Installation:
(Figure 8)
*See chart on Page 5