From AllPinouts
Connector pinout for: Garmin GPS 13 PIN

Pin connector as seen from back of unit
| 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
|
|
References

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