The Real Bob Roberts™
Economy JAMMA Harness Pinout & Colors
| PARTS SIDE | SOLDER SIDE | ||||
| Black 18ga | Ground | 1 | A | Ground | Black 18ga |
| Black 18ga | Ground | 2 | B | Ground | Black 18ga |
| Red 18ga | +5 volts | 3 | C | +5 volts | Red 18ga |
| Red 18ga | +5 volts | 4 | D | +5 volts | Red 18ga |
| Blue | - 5 volts | 5 | E | - 5 volts | Blue |
| Orange | +12 volts | 6 | F | +12 volts | Orange |
| NA | Key | 7 | H | Key | NA |
| Yellow | Coin Counter 1 | 8 | J | Coin Counter 2 | Yellow/S |
| Empty | 9 | K | Empty | ||
| Violet | Speaker + | 10 | L | Speaker - | Violet/S |
| Empty | 11 | M | Empty | ||
| Red | Red Video | 12 | N | Green Video | Green |
| Blue | Blue Video | 13 | P | Composite Sync | White |
| Black | Video Ground | 14 | R | Service Switch | Orange/S |
| Red/S | Test | 15 | S | Empty | |
| Brown | P1 Coin | 16 | T | P2 Coin | Brown/S |
| Gray | P1 Start | 17 | U | P2 Start | Gray/S |
| Blue | P1 UP | 18 | V | P2 Up | Blue/S |
| Green | P1 Down | 19 | W | P2 Down | Green/S |
| Yellow | P1 Left | 20 | X | P2 Left | Yellow/S |
| Red | P1 Right | 21 | Y | P2 Right | Red/S |
| Orange | P1 Button 1 | 22 | Z | P2 Button 1 | Orange/S |
| Violet | P1 Button 2 | 23 | a | P2 Button 2 | Violet/S |
| White | P1 Button 3 | 24 | b | P2 Button 3 | White/S |
| Empty | 25 | c | Empty | ||
| Empty | 26 | d | Empty | ||
| Black | Ground | 27 | e | Ground | Black |
| Black | Ground | 28 | f | Ground | Black |