GX388 is Time Pilot '84
Don't solder wires directly to the PCB's.
To make adaptors, you need a finger board and a connector of the right size. I get mine from Bob Roberts.
If you are testing or playing in a Jamma cabinet, you'll need a Jamma finger board (28/56) and a connector that fits the board you're working on.
Basically, all games need the same connections:
- Power (+5v, +12v, -5v can be provided in Jamma setups)
- Video (R,G,B,Gnd, Sync)
- Audio (mono is most common)
- Coindoor (coin switches, coin door lights (not necessary), coin meter (not necessary)
- Controls (Joy1 + buttons, Start buttons)
If you want to play, you will need all of these
If you just want to test, start by soldering wires for power and video and then test it.
The great thing about making adaptors is that you don't need great soldering skills. You can use a gun with mega power and not damage anything, because you're only working with wire and connectors, no IC's. Also the traces are big enough that even a novice can do it.
Good luck,
Rocky