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3 pin stereo plug connector layout
3 pin stereo plug connector
Garmin GPS unit Pin
Name
Garmin GPS unit Pin
Number
Direction PC Pin
Number
PC Pin
Name
Description
RXD 1 --> 2 RXD  
TXD 2 <-- 3 TXD  
GND 3 --- 5 GND  
9 pin D-SUB female connector layout
9 pin D-SUB female connector
According to 11 reports in our database (9 positive and 0 negative) the Garmin Foretrex 101,201, Forerunner 201 to Serial DB9 cable schematic pinout should be correct.

Is this pinout
Garmin Foretrex 101,201, Forerunner 201 to Serial DB9 cable schematic visual pinout:click to enlarge
Source(s) of this and additional information: http://noisygecko.com/Projects/Treo600ForetrexGPSCable
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