7800 vs. Colecovision pinouts

[Garwor]

I'm in the process of building a two button arcade stick that I'd like to use with my 2600 / 7800, as well as a Colecovision. As far as I can tell the main conflict would be a differences in fire button pinouts between the 7800 and Colecovision. If someone would be able to refer me to a clear diagram I can trust, that'd be great. I've found a few already, but they're poorly labeled and from sources I can't have a conversation with. I prefer to be as sure as possible about the parameters of a project before diving in.

 

Thanks!