CBS does sticky labels now:
http://www.cbsonline.co.uk/iva-brake...ick-4531-p.asp
And a legend sheet for labeling up your switchgear. It has a brake test label on it should you end up fitting a switch in the cockpit rather than to the handbrake:
http://www.cbsonline.co.uk/legends-s...end-4077-p.asp
I used this for the switch panel and the on the brake test switch I had on the stalk.