Older install

[Randall]

Good Morning,
The three photos are the components and cables on a boat I recently purchased. There is also a tiller auto helm connection that I didn't photo.
Can anyone tell from the photos the age or era or model of gps control unit compatible to get gps, depth and auto helm set up?

Thanks for any input.

 

[Nuvi-Nebie]

Looks like this :-
https://www.garmin.com/en-AU/p/100702

 

[Randall]

It does look like that with the addition of the depth. It's compatible with a ton of screens. Is that connector a fairly universal plug for Garmin units?