Not needed. The wires are there.
On the dash - right side, you pull out the switch blanking plate (you must use the right one) and the Cruise wires come out on the blanker! Take the pluggy off, push it onto the cruise switch, and stuff it in the hole. Job done.
Get the radio code! Disconnect the battery PLUS leads.
Wait about half an hour to discharge the airbag capacitors.
Turn the steering wheel turn 90 degrees away from straight.
Undo two TORX screws behind the wheel and lift off the airbag, and unplug it. Lay it down somewhere safe.
Use the template to mark where the hole needs to be cut on the right side of the steering wheel - it does not need to be accurate as the switch has a big rubber base that is miles bigger than the hole.
Push the switch in through the hole from the outside and try to hook its bracket over a stud. Test how it fits. Find the white plug that looks spare and plug it into the switch. Fit the switch over the stud and screw in ONE screw that came with the switch. Tuck the wired into a clip sitting there ready for them. Refit the airbag and wires and two screws.
Connect battery, re-set radio, and head for the open road!