| Connector J1 : MS27505E15B35P | Connector J2 : MS27505E15B35PA | ||
| Pin No. | Signal | Pin No. | Signal |
| 1 | 1553-1-BusA+ | 1 | 1553-2-BusA+ |
| 2 | 1553-1-BusA- | 2 | 1553-2-BusA- |
| 3 | 429-1-TxB | 3 | 429-3-TxB |
| 4 | 429-1-TxA | 4 | 429-3-TxA |
| 5 | RS-232C TXD | 5 | |
| 6 | RS-232C RTS | 6 | |
| 7 | 429-2-TxB | 7 | 429-4-TxB |
| 8 | 429-2-TxA | 8 | 429-4-TxA |
| 9 | 1553-1-BusB+ | 9 | 1553-2-BusB+ |
| 10 | 1553-1-BusB- | 10 | 1553-2-BusB- |
| 11 | DIS-IN-1-Open/Gnd | 11 | DIS-IN-4-Open/Gnd |
| 12 | Aircraft 28V | 12 | Aircraft 28V |
| 13 | DIS-IN-2-Open/Gnd | 13 | DIS-IN-5-Open/Gnd |
| 14 | RS-232C CTS | 14 | |
| 15 | RS-232C RXD | 15 | |
| 16 | 429-1-RxA | 16 | 429-7-RxA |
| 17 | 429-1-RxB | 17 | 429-7-RxB |
| 18 | 429-2-RxA | 18 | 429-8-RxA |
| 19 | 429-2-RxB | 19 | 429-8-RxB |
| 20 | 429-3-RxA | 20 | 429-9-RxA |
| 21 | 429-3-RxB | 21 | 429-9-RxB |
| 22 | 429-4-RxA | 22 | 429-10-RxA |
| 23 | 429-4-RxB | 23 | 429-10-RxB |
| 24 | DIS-OUT-1-Open/Gnd | 24 | DIS-OUT-2-Open/Gnd |
| 25 | DIS-IN-3-Open/Gnd | 25 | DIS-IN-6-Open/Gnd |
| 26 | Return | 26 | Return |
| 27 | DIS-IN-1-28V/Open | 27 | DIS-IN-4-28V/Open |
| 28 | 429-5-RxA | 28 | 429-11-RxA |
| 29 | 429-5-RxB | 29 | 429-11-RxB |
| 30 | 429-6-RxA | 30 | 429-12-RxA |
| 31 | 429-6-RxB | 31 | 429-12-RxB |
| 32 | DIS-OUT-1-28V/Open | 32 | DIS-OUT-2-28V/Open |
| 33 | DIS-IN-2-28V/Open | 33 | DIS-IN-5-28V/Open |
| 34 | Gnd | 34 | Gnd |
| 35 | DIS-IN-3-28V/Open | 35 | DIS-IN-6-28V/Open |
| 36 | Gnd | 36 | Gnd |
| 37 | Discrete Return | 37 | Discrete Return |
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