This is any pinouts I have discovered or needed for Galaxian boards with variations on the 'normal' 22 pin edge connector.

Nichibutsu Moon Cresta MC-1FJ

This is the one with the rows of pins. I had wired one up originally with the help of a multi-meter, but then Phil Morris found this document (and it had a few pins labeled that I had missed off) - I'll tidy it up into a table some time, but until then ...

Connector 'O'
-------------
1 +5VDC
2 Not Connected
3 Ground
4 Video Blue
5 Video Green
6 Video Red
7 Not Connected
8 Player 2 Down
9 Coin Switch 1
10 Table Mode (Connect to Ground if Table mode required)
11 Not Connected
12 Player 2 Right
13 Not Connected
14 Player 2 Left
15 Player 2 Up (or Player 2 Fire)
16 Button 1 Player 1
17 Player 1 Right
18 Player 1 Left
19 Start Switch 2
20 Start Switch 1
21 Player 1 Down
22 Not Connected
23 Not Connected
24 Video Sync
25 Speaker +


Connector 'P'
-------------
1 -5VDC
2 +12VDC
3 +12VDC
4 +5VDC
5 +5VDC
6 +5VDC


Connector 'Q'
-------------
1 Speaker-
2 Ground
3 Ground
4 Ground

so what other games come on this board to need UP and DOWN connected ?

Bootleg Galaxian EDM-28

Phil comes up with another 'interesting' galaxian PCB, this time before I get around to wiring the one I have up.

The PCB is labelled EDM-28 and has an 8 pin power connector (1 pin removed as a key) and a 26 pin IDC connector. You may also have an additional 2 pin connector between these two

Pinouts are defined as looking at the TOP of the board with the edge connectors to the right. 

IDC Connector

+5V             | 1  | 26 | NOT CONNECTED
COIN SW 1       | 2  | 25 | COIN SW 2
COIN OR SRV?*   | 3  | 24 | TEST
START SW 2      | 4  | 23 | START SW 1
P1 RIGHT        | 5  | 22 | P1 LEFT
P2 BUTTON 1     | 6  | 21 | P1 BUTTON 1
P2 RIGHT        | 7  | 20 | P2 LEFT
NOT CONNECTED   | 8  | 19 | TABLE
GND             | 9  | 18 | GND
GND             | 10 | 17 | GND
VIDEO RED       | 11 | 16 | VIDEO GREEN
VIDEO BLUE      | 12 | 15 | VIDEO SYNC
NOT CONNECTED   | 13 | 14 | SPEAKER + **

Note: Unsure if this is for Service mode (as per the Midway Galaxian schematics) or Coin up (Coin 3???)

** Note: Speaker + on my board was a wire link from pin 14. It appears that there is space on the board for an additional 2 pin connector, on the boards we have seen so far, only one has had these pins fitted.  If it is indeed present, then the pinout would be

Speaker Connector (if fitted)

1 GND
2 Speaker +

Power Connector

1 GND
2 +5V
3 +12V
4 NOT CONNECTED
5 +5V
6 GND
7 KEY
8 NOT CONNECTED

Subelectro Wiring

	         Parts		Solder
Gnd		A	O O 	1	Gnd
Gnd		B 	O O 	2	Gnc
Gnd		C	O O	3
		D	O O	4	12v (check before wiring - not always!)
		E	O O	5
		F	O O	6	Coin 1
		G	O O	7	Coin 2
		H	O O	8	Test
		I	O O	9	Service
		J	O O	10	1 Player Start
		K	O O	11	2 Player Start
		L	O O	12	Player 1 Left
		M	O O	13	Player 1 Right
		N	O O	14	Green
Red		O	O O	15	Player 1 Fire
Blue		P	O O	16	Player 2 Fire
Sync		Q	O O	17	Player 2 Left
		R	O O	18	Player 2 Right
		S	O O	19	Table
		T	O O	20	
		U	KEY	21
12v		V	O O	22	Speaker +
NC		W	O O	23	5V
NC		X	O O	24	5V

Irem UniWarS Wiring

 
	         Parts		Solder
Gnd		A    	O O 	1	Gnd
Gnd		B  	O O 	2	Gnd
		C 	O O	3	
		D 	O O	4	
P1 Left		E	O O	5	P2 Left
P1 Right	F	O O	6	P2 Right
P1 Fire		G	O O	7	P2 Fire
Start 1		H	O O	8	Start 2
Vert Sync (+ve)	I	O O	9	Composite Sync (-ve)
		J	O O	10	Horiz Sync (+ve)
12v		K	O O	11	12v
12v		L	O O	12	12v
Speaker		M	O O	13	Speaker
		N	O O	14	
Red		O	O O	15	Green
Blue		P	O O	16	
		Q	O O	17	
		R	O O	18	
Service		S	O O	19	Coin
5v		T	O O	20	5v
5v		U	O O	21	5v
Gnd 		V	O O	22	Gnd
Vertical & Horizontal sync's seem to be +ve, but the composite is -ve
This board MUST have a coin counter connected, otherwise it will not boot up. I just wired the coin connecter pin to 12v via a 1k resistor.