Pin connector as seen from back of unit
This page documents the 7-pin proprietary connector found on Garmin GPS receivers. The layout provides power input, ground, bidirectional serial data lines, an alarm signal, and two unused pins. Only the seven pins listed below are covered.
| Pin | Name | cable color |
|---|---|---|
| 1 | power input | red |
| 2 | ground | black |
| 3 | data out | blue |
| 4 | data in | brown |
| 5 | not used | white |
| 6 | not used | green |
| 7 | alarm | yellow |
Notes
Pin numbers refer to the connector on the device as seen from the back of the unit; pins not listed are unused.
References
- Garmin GPS to PC Wiring Instructions (P/N 190-00222-00) — Garmin Corporation; “units with 7 pin plug”.