Mortal Kombat 1 Connector

[Susurrous]

I'm restoring a Mortal Kombat 1 arcade cabinet and I have these two connectors:

• the 14-pin one goes to the coin door, coin door lights, counter, etc
• the small two-pin one goes up to the speakers

I've tried to find out what they're called online and I think they're IDC .100" connectors.

I'm assuming these DON'T go to the PCB and instead connect to the JAMMA wires, right?

If so, I guess I need to find the locking header that fits them? Otherwise, could I just purchase some different quick release connectors?

Any advice on what they're called or where to purchase the other ends?

[Titchgamer]

Not one I am familiar with but they could be IDC’s.

PL1 may know?

But if you look around the conector the maker and sometimes the model are usually on them.

But sometimes small and hard to see!!

[Mike A]

I might have time to look into it after work, but a little independent research never hurt anyone.

You should start here:

https://www.arcade-museum.com/manuals-videogames/M/Mortal_Kombat_1_1640025101_July_1992.pdf

What you are looking for should be in there.

[bperkins01]

Those are old style connectors that are not really used..  Look up Molex connectors (.156 spacing is very common)

[PL1]

The large connector is definitely some type of insulation-displacement connector (IDC) -- you can see the blades in the center right photo above.



You can easily find the pitch by measuring the distance from the center of pin 1 to the center of pin 11 and dividing that distance by 10.
- 1" ==> 0.1" pitch
- 1.56" ==> 0.156" pitch

Beyond that generic advice, I'm not sure which manufacturer or series connectors those are.   
--------
Pages 39-40 of the manual Mike linked to shows the two connectors, but doesn't have part numbers.
- The 5 pin sound connector goes to a 5 pin connector.
- The 14 pin coin door connector goes to a 12 pin connector and a 2 pin connector. (5.9 VAC from the transformer)


Scott

[Titchgamer]

If you cant find them just chop em off and replace with a better quality connector.

I have grown rather fond of the JST YL series, Molex are another good choice

[Mike A]

Just replace the whole mess with Molex connectors. They are a more solid connection, and they are readily available.

[Susurrous]

If you cant find them just chop em off and replace with a better quality connector.

I have grown rather fond of the JST YL series, Molex are another good choice

Thanks everyone! That's what I needed to know. I wanted to keep everything as close to OEM as possible, but that's proving to be a challenge.

I'll just replace it with more modern and accessible connectors. 

[Mike A]

It is very common even for collectors to replace the IDC connectors with Molex connectors.

Those punch down connectors never should have been used in the first place.

[Susurrous]

I might have time to look into it after work, but a little independent research never hurt anyone.

You should start here:

https://www.arcade-museum.com/manuals-videogames/M/Mortal_Kombat_1_1640025101_July_1992.pdf

What you are looking for should be in there.

Also, thank you for this. I'm so glad I asked here. The Operations Manual you provided a link for is far more detailed than the one I had been using, which I now see is the "Mortal Kombat Kit" Operations Manual (which seems to be the prominent MK:OM PDF you find online). I think it's going to clear up a lot of the questions I've been having.

[Susurrous]

Hey, guys! I'm pretty close to done with re-wiring my restored Mortal Kombat cabinet. Unfortunately, not being an electrician, I'm second-guessing my ability to accurately understand the wiring diagram. I uploaded an image that uses color in the areas where I have questions.

My first question concerns the Coin Chute lights. There is a Yellow and White-Yellow wire that both read 5.9Vac. Tracing it back on the diagram, I see it goes to the transformer, but since I have a newer Wells-Gardner CRT monitor with a standard power plug, I don't have the isolation transformer, line filter, or any of that. Is there another, simple way I can run the 5.9 Vac to Coin Door to power the coin door lights?

My second question concerns the coin meter. There is a Gray +5V wire (that runs to the Coin Meter?). Tracing it back, it looks like it goes to pin 3 of the J3 connector on the PCB, but I just wanted to verify if that was correct. If so, what's the best way to connect and run this wire? Just a single pin wire to the coin door harness?

My last question is about the speakers (Red-Violet and Green-Violet off the JAMMA) and the volume control (Orange-White and Green-White from P5 on the sound board). Again, not being an electrician, I'm not sure what those squiggly lines to the right of "Volume Control" mean. This is my first arcade cabinet, so I'm assuming all volume adjustments go from the control pot > sound board > through JAMMA > to speakers? How do you control volume on PCBs that don't have a sound board?