ARB switch hole sizes - HELP

I am working this weekend to get things ready for the installation of rear lockers, but need help with the dimensions for the ARB compressor/actuator switches.

Anyone have the installation information?

I have removed the ashtray and have fabricated an aluminum insert. I want to cut out the three switch openings. (Front later) so that the installer has less custom work to complete.

Todd

The switches are the same size as the stock switches below left of the steering wheels. I had a blank in one of those and my rear locker switch was a perfect fit.

ARB?...Bastard! I knew I shouldn't have given you those raffle tickets!