Yes, the way AMP connectors are normally numbered is by using numbers along one side (solder side or Component side) and the other side uses a lettering system where they leave out letters that look like numbers like the letter "I" and the Letter "O". When they hit Z, they start with lower case letters if the connector is that long ( X, Y, Z, a, b, c....). I am not exactly sure about the connector that Gottlieb used but there is usually a very small number/letter as part of the plastic on the back side of the connector where the wires enter. You will usually need good light and a magnifier to see them.

On System 80, I believe crimp 1 is screened on the CPU board itself. Hope this helps.

Steve
System 80, not just a job, it's an adventure

These are Molex 4338 series connectors which are obsolete.

Characters with bars over them is the Molex representation of a lower case letter.
Data sheet can be found here:
https://www.greatplainselectronics.com/Datasheets/Molex/SD-4338.pdf

Crimp contacts -- these use 08-03-0304, also obsolete. Can also use 08-03-0305 - which I just happened to have found a full reel of this week. Will be adding them to website when they arrive.

Ed, what is the difference between the two bifurcon crimps? Reel instead of individual?

Steve
System 80, not just a job, it's an adventure

Yep -- reel versus loose.
When they are made - they are all reeled. They have a de-reeling machine that they then run some of the reels through -- and charge extra for the privilege.
08-03-0304 = Loose piece.
08-03-0305 = Reel (5000 to a reel)

Argh!
Bad news ... and good news.

Bad news first.
My memory must be going bad. 08-03-0305 contacts are *not* the reel version of the 08-03-0304's as I mentioned earlier. 08-03-0305 is the reel version of 08-03-0306.

08-03-0303 = Reel version, 18-20AWG
08-03-0304 = loose piece, 18-20AWG
08-03-0305 = Reel version, 20-26AWG (Just bought 7000 of these and am selling in strips of ten).
08-03-0306 = loose piece, 20-26AWG

The good news -- they also had a full bag of 5000 x 08-03-0304's. Unfortunately, they were quite proud of them and priced them accordingly. But still got them.

Both