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Garmin 2010C to GSD-20

Old 07-25-2010, 06:40 PM
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Default Garmin 2010C to GSD-20

Looking for the pinouts of the Garmin 6 pin transducer cable to the Garmin GSD-20 sonar module.

Thanks..
Old 07-26-2010, 07:02 AM
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check thishttp://www8.garmin.com/manuals/GSD21RemoteSounder_InstallationInstructions.pdf
or call 800-800-1020
Old 07-26-2010, 09:21 AM
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Thanks Toddo.. Have both instruction manuals already. Problem is the Garmin instruction does not list out how each wire correlates to what pin on the connector. Clearly shows the function but what pin does what?
Old 07-27-2010, 03:12 AM
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did you cut the plug off the transducer that goes to the gsd20? what is stamped on the transducer? tm or th or ih? did you know it voids the warranty of transducer and unit connected to?
Old 07-28-2010, 05:38 PM
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Yea someone did apparently. I bought the boat used and since it's plugging into an outdated 2010, I hardly doubt there is a warranty left worth worrying about anyway. Basically the ducer is mounted under a fuel tank and getting to it is more trouble then it's worth.
Did manage to play enough russian roulette with the pins to get it working, funny thing is none of the Airmar wiring diagrams for Garmin units match the color/pin configuration that is currently working.
Old 08-01-2010, 09:11 AM
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For transcuder with depth only:
pin 4 signal+
pin 5 signal-
pin 6 shield line
short pin 5 and pin 6

For transcuder with depth and temp:
pin 4 depth signal+ red
pin 5 depth signal- black, temp signal- green, and shield wire
pin 6 temp signal+ white

Not sure if the wire color are correct!

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