Is my Atomiswave SD jamma harness correct?

Just checking to see if my Jamma harness in my Atomiswave SD is correct. It's a 2 player CP, but button 5 (nor 6) is connected. I know Atomiswave is 5 standard, so I want that hooked up. Nothing coming off K and J to hook the 5th button up, so is that easy to add?

I looked on the net and the Atomiswave SD pinout should be as such...

------------- 56-pin edge connector -------------
PARTS (TOP) SIDE | SOLDER (BOTTOM) SIDE
GND 1 | A GND
GND 2 | B GND
+5V 3 | C +5V
+5V 4 | D +5V
-5V 5 | E -5V (OPTIONAL *)
+12V 6| F +12V
KEY 7 | G KEY
COIN COUNTER #1 8 | H COIN COUNTER #2
LOCKOUT COIL #1 9 | I LOCKOUT COIL #2
MONO SPEAKER (+) 10| J MONO SPEAKER (-)
AUDIO (+) [PRE-AMP] 11| K AUDIO GND [PRE-AMP]
VIDEO RED 12| L VIDEO GREEN
VIDEO BLUE 13| M VIDEO SYNC (COMPOSITE SYNC)
VIDEO GND 14| N SERVICE SWITCH [OPTIONAL]
TEST SWITCH 15| O TILT SWITCH [OPTIONAL]
COIN SWITCH #1 16| P COIN SWITCH #2
1P START 17| Q 2P START
1P UP 18| R 2P UP
1P DOWN 19| S 2P DOWN
1P LEFT 20| T 2P LEFT
1P RIGHT 21| U 2P RIGHT
1P BUTTON A 22| V 2P BUTTON A
1P BUTTON B 23| W 2P BUTTON B
1P BUTTON C 24| X 2P BUTTON C
1P BUTTON D 25| Y 2P BUTTON D
1P BUTTON E 26| Z 2P BUTTON E
GND 27| AA GND
GND 28| BB GND
PARTS (TOP) SIDE | SOLDER (BOTTOM) SIDE



Mine is:


------------- 56-pin edge connector -------------
PARTS (TOP) SIDE | SOLDER (BOTTOM) SIDE
GND 1 | A GND
GND 2 | B GND (MISSING)
+5V 3 | C +5V
+5V 4 | D +5V
-5V (OPTIONAL *) 5 | E -5V (OPTIONAL *) (MISSING)
+12V 6 | F +12V
KEY 7 | G KEY
COIN COUNTER #1 8 | H COIN COUNTER #2 (MISSING no drama)
LOCKOUT COIL #1 9 | I LOCKOUT COIL #2 (both MISSING no drama)
MONO SPEAKER (+) ** 10| J MONO SPEAKER (-) **
AUDIO (+) [PRE-AMP] 11| K AUDIO GND [PRE-AMP] (both MISSING)
VIDEO RED 12| L VIDEO GREEN
VIDEO BLUE 13| M VIDEO SYNC (COMPOSITE SYNC)
VIDEO GND 14| N SERVICE SWITCH [OPTIONAL]
TEST SWITCH 15| O TILT SWITCH [OPTIONAL] (MISSIN no drama)
COIN SWITCH #1 16| P COIN SWITCH #2 (MISSING no drama)
1P START 17| Q 2P START
1P UP 18| R 2P UP
1P DOWN 19| S 2P DOWN
1P LEFT 20| T 2P LEFT
1P RIGHT 21| U 2P RIGHT
1P BUTTON A 22| V 2P BUTTON A
1P BUTTON B 23| W 2P BUTTON B
1P BUTTON C 24| X 2P BUTTON C
1P BUTTON D 25| Y 2P BUTTON D
1P BUTTON E 26| Z 2P BUTTON E (nither are coming out of the K and J)
GND 27| AA GND
GND 28| BB GND (MISSING)
PARTS (TOP) SIDE | SOLDER (BOTTOM) SIDE

Should those grounding wires and the audio pre-amp wires be missing on the harness? Possibly why the sound is stuffed on my NEO MB? Once the Cab is on, I have to quickly turn it off and the back on and then the audio is fine.

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