Help! Merc Keyless ignition question

[mayatan]

I bought a Hydrostream with a Merc circular keyless ignition panel. I will get a pic but you program it so you enter a lock code then hit "run" then hit "start" and off you go.

I am looking for and documentation on this Keyless system as I would like to change the lock code and some other things. All I found on the internet was boat places wanting to sell them. They go for about 150 $.

I am looking for a PDF or anyplace that supports these button panel systems.

Thanks!