The factory security functions are managed by the Body Control Module (BCM) where we need to make the connections. The BCM is located behind the radio.

Set the park brake.
Move the shifter to the neutral position.
Starting at the most forward end, pull up to remove the bezel.

Disconnect the electrical connectors.
Remove the shift lever bezel.

Remove the I/P storage compartment screws.
Remove the storage compartment from the I/P.

Starting at the bottom, pull to disengage the trim bezel clips.

Disconnect the HVAC control head connections.

Disconnect the electrical connectors from the bezel mounted switches.
Remove the center trim bezel from the vehicle.

Remove the radio screws.

Disconnect the radio electrical connectors and the antenna.

Disconnect the ground strap.
Remove the radio.

There are 4 connectors, we need only 3, C2, C3 and C4.
This is C2, 24 pin Grey

This is C3, 24 pin Pink

This is C4, 8 Pin Grey.

Disconnect the battery, remove the connectors.