Disable coin slot on pepsi machine

I have a choice vend 168 can machine this is an older machine about 1970s.  I am trying to disable the coin requirement but can not figure out how to do it.

[Bob K]

Can't answer your question, just wanted to say "Look at that thing shine!"  

Sweet machine, looks brand new!!

[joesquid]

Doug,
  This link ought to help:
free vend wiring option

let me know if you have any questions.