4 pin Garmin round special
connector at the GPS unit.
This connector is available on: Garmin GPS 12 XL, GPS II, III, V, 72, 76, 92, 176, 176c, 196, 295, StreetPilot III.
| Pin | Name | Description | cable color |
|---|---|---|---|
| 1 | RXD | data in | white |
| 2 | TXD | data out | brown |
| 3 | GND | ground | black |
| 4 | VCC | power input | red |
Notes
- This GPS unit may be connected to PC serial port with simple straight through cable.