Pin connector as seen from back of unit
The 13-pin connector is the proprietary data and power interface used on certain Garmin GPS receivers. The connector carries power input, serial data in and out, and an alarm signal; the remaining pins are unused in the documented wiring. Only the active pins listed below are defined for this connector.
| Pin | Name | cable color |
|---|---|---|
| 1 | ground | black |
| 2 | power input | red |
| 3 | not used | |
| 4 | data out | blue |
| 5 | data in | brown |
| 6 | alarm | yellow |
| 7 | not used | |
| 8 | not used | |
| 9 | not used | |
| 10 | not used | |
| 11 | not used | |
| 12 | not used | |
| 13 | not used |
Notes
Pin numbers refer to the connector on the device as seen from the back of the unit; pins not listed as active are unused.
References
- Garmin GPS to PC Wiring Instructions (P/N 190-00222-00) — Garmin Corporation; “units with 13 pin plug”.