CN1
Top Speed
Note: Stereo speakers, uses steering wheel.
Buttons arranged on JAMMA as such:
Button A Accelerator
Button B Shifter
Button C Nitro

PCB Pinout          Parts Side/Solder Side
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Ground                  |  1  |  A  | Ground
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Ground                  |  2  |  B  | Ground
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+5 Volts                |  3  |  C  | +5 Volts
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+5 Volts                |  4  |  D  | +5 Volts
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-5 Volts                |  5  |  E  | -5 Volts
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+12 Volts               |  6  |  F  | +12 Volts
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                        |  7  |  H  |
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                        |  8  |  J  |
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Coin meter 1            |  9  |  K  | Coin meter 2
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L Speaker +             |  10 |  L  | R Speaker +
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L Speaker -             |  11 |  M  | R Speaker -
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                        |  12 |  N  |
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                        |  13 |  P  |
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Ground                  |  14 |  R  | Service
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Ground                  |  15 |  S  |
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Coin 1                  |  16 |  T  | Coin 2
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                        |  17 |  U  |
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Nitro                   |  18 |  V  | Start
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                        |  19 |  W  | Accelerator
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Shift                   |  20 |  X  |
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                        |  21 |  Y  |
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                        |  22 |  Z  |
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                        |  23 |  a  |
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                        |  24 |  b  |
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                        |  25 |  c  |
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Steering 1              |  26 |  d  | Steering 2
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Ground                  |  27 |  e  | Ground
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Ground                  |  28 |  f  | Ground
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Video connector
1 Ground
2 Red
3 Green
4 Blue
5 Sync

Power connector
1 Ground
2 Ground
3 Ground
4 Ground
5 +5 Volts
6 +5 Volts
7 +5 Volts
8 +5 Volts
9 -5 Volts
10 Key
11 +12 Volts
12