if its an 05 then will definitely will not have the wire.
Credit to source websites for images used.
To check:
Disconnect battery.
Use flathead screwdriver to prise off top of steering column trim.
Unscrew 3x T25 torx screws ( 2 either side of steering wheel and 1x under steering column under the steering adjustment lever)
Remove lower steering column trim
You'll see a module attached on the underside looking like this:
Pull the red locking tab away from the plug so it disengages on the black plug.
Press and pull out the black plug.
Look and the pin numbering on the plug and you'll see pin 13 slot is empty.
Id get garage to help if you are not confident at auto electrics. I cant accept responsibility if anything happens etc etc