| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 2 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 3 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 4 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 5 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 6 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 7 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 8 | E | Terminal R | Unloader relay, terminal R |
| | | |
| 9 | E/A | I-bus signal line | Telephone connector |
| | | |
| 10 | E | Terminal 30 voltage supply | Fuse F74 |
| | | |
| 11 | E | Telephone ON signal | Voice input Telephone connector Splice, telephone |
| | | |
| 12 | | Not used | |
| | | |
| 13 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 14 | E | Signal, terminal 58 dimmer | Light module |
| | | |
| 15 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 16 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |
| 17 | M | Ground | Ground splice |
| | | |
| 18 | E/A | Motorola-internal | Transceiver/charging electronics |
| | | |