Astro City & the Troubling 4th Button HELP!!

[JustinS]

I recently purchased an Astro City Cab and bought a MV-1B board from Big Bear.

The Question I have now is how can I easily wire in the 4th button for Neo with my current setup? I searched some but I guess My searching skills weren't getting it done so I thought Id post here for Ideas and suggestions.

 

[OMFG]

If the full Jamma harness loom is intact, go by this.

http://hardmvs.com/manuals/Jamma2NeoGeo4SlotPinout.pdf

You need to trace button D's position from the loom. If it's not there, both 1p and 2p button D needs to be wired. What kind of Jamma connector do you have currently?

 

[JustinS]

full harness is intact. I haven't touched it at all.
Ive just been playing puzzle bobble and Windjammers with it but want to implement some of the fighters.

 

[JustinS]

Best place to get pins for the harness? website/store?

 

[OMFG]

If the wire from the JAMMA harness is still intact then you need to follow where both wire 'c' and '25' go. Crimp a quick disconnect on the end of both and wire it directly from the JAMMA loom and onto the button you're using. If you're using a 12P connector and pins and/or want to make your own harness, you can buy the parts from www.akihabarashop.jp, but I'd shop around for a local place.

If you don't own one, purchase a pin extractor.

 

[JustinS]

Im a wiring newbie.
No I dont have a pin extractor. Do you have a good one that you would recommend?

 

[OMFG]

Im a wiring newbie.
No I dont have a pin extractor. Do you have a good one that you would recommend?

I use Jonard extractors and inserters, but you should be able to use either of the following.

http://www.amazon.com/MSD-Ignition-8193-Extraction-Tool/dp/B00029JKDW

http://www.mikesarcade.com/cgi-bin/store.pl?sku=HT2038

http://www.amazon.com/D-Sub-Pin-Insertion-Extraction-Tool/dp/B0010PKPEA

 

[JustinS]

I ordered the pin extractor. Hopefully I can track that wire down easily.

Thanks for the help. I appreciate it more than you know!

 

[JustinS]

Here is the Cab/ Jamma Harness/ Control Panel

 

[JustinS]

If the full Jamma harness loom is intact, go by this.

http://hardmvs.com/manuals/Jamma2NeoGeo4SlotPinout.pdf

You need to trace button D's position from the loom. If it's not there, both 1p and 2p button D needs to be wired. What kind of Jamma connector do you have currently?

I posted a pic of the Jamma Harness if that helps you see what Im working with

Im not aware of the names of the different types of harnesses

 

[OMFG]

Use the Jamma diagram I posted from hardmvs.com with this if you want to see which wire goes to what.

Follow the wire I marked (wire 25 "parts side") and the one directly underneath it (wire c "solder side") to the CP. Wire 25 is 1P 'D' and wire c is 2P 'D'. Chances are each of those wires are going to the backside of those two 12 pin connectors. If they are you may just need to add a connecting pin and wire it to the future button you're adding. Another option, you could just bypass the 12 pin connector, crimp a .187 quick disconnect and wire the buttons that way. Personally, I rather take the extra time and use the 12 pin connector since you have one.

Out of curiosity, how are you adding the button to the CP?

 

[JustinS]

Use the Jamma diagram I posted from hardmvs.com with this if you want to see which wire goes to what.

Follow the wire I marked (wire 25 "parts side") and the one directly underneath it (wire c "solder side") to the CP. Wire 25 is 1P 'D' and wire c is 2P 'D'. Chances are each of those wires are going to the backside of those two 12 pin connectors. If they are you may just need to add a connecting pin and wire it to the future button you're adding. Another option, you could just bypass the 12 pin connector, crimp a .187 quick disconnect and wire the buttons that way. Personally, I rather take the extra time and use the 12 pin connector since you have one.

Out of curiosity, how are you adding the button to the CP?

CP has 6 button already. 3 buttons plus 3 plugs for buttons 4,5,6

here are a couple other pics of the cab

 

[JustinS]

NEW QUESTION???

Where can I get harness pins for the Astro City?(like the ones used in the 12 pin harness)

What size are they? & what is the best place to order them from?