On this page...
to get the Garmin eTrex connector and how to assemble it ...
On this page I briefly show you where to get a
Garmin eTrex connector and how to assemble it. This text is based
on the connectors by pFranc.
(Larry) designed his own eTrex connectors for both the
rectangle shaped Garmin connector and the
round Garmin connectors.
has an interesting phylosophy called "sharehardware",
where you can buy connectors. Buying does not mean PAYING MONEY.
Larry rather sees buying as a trade. You can for example trade money
for the connectors, but also reference on your website (as I did),
other funy stuff, etc. So either trade or spend money - it's up
can be found in several countries!
Note: Read the disclaimer!
New model Garmin eTrex
Below you will find the connector pinout
of the more recent Garmin eTrex connector. It is being
used with the Garmin eTrex family (standard yellow one, Venture, Legend,
You will need this info to hook your eTrex
to a PDA or PC.
The pin layout is as shown below;
Powersupply (+ 3 Volt)
RXD (Data IN)
TXD (Data OUT)
Tip: If you're busy with an
eTrex connector anyways then you might want to consider adding external
power for the eTrex aswell. Use a 3V powersupply and connect it to pin
1 (+) and 4 (-) of the eTrex connector.
The pFranc-connector comes as a do-it-yourself assembly
In the kit you will find 3 plastic parts,
one screw and a metal strip with pins on it.
Gently bend the individual pins so they break loose from the rectangle
piece of metal, so you will end up with 4 of these:
After breaking the pins loose, we will
need to bend them.
I used a flat screw driver for that purpose.
First lay the pin, with the bended part
facing down, in the plastic piece with the four square holes (picture
Next use a flat screwdriver to hold it in that position (picture 2) and
gently use your nail to push it up as shown in the three images above
(picture 3). Repeat this step for all four pins.
Now get your wires and connect (solder)
them on the pins you just did bend. After doing so, gently push each pin,
one at a time, through the plastic piece with the large rectangle opening
as show in the image below.
Now we need to put the pins in the proper
position in the plastic piece we just used for bending the pins.
To make things a bit easier on you, use
a needle to hold the pins in place. The illustration below shows you how.
Do this for all four pins.
TIP: While you're
at it, make a note which color cable you placed with what pin.
If you're nor sure what the pin numbers are, then take a look at the image
at the beginning of the page.
After completing this for all four pins,
gently move the two pieces of plastic together until it becomes one.
Do not yet remove the needle! The needle
is good for some stability while assembling the connector.
Now we need to place the "hood"
over the connector. It's tha last piece of plastic which we gently put
over the cable. Make sure that the cable do not make any kind of shortcut
After putting that together, gently rotate
the connector and insert the screw in the hole (on the side where the
pins stick out). Do not use excessive force when tightening the screw.
After that you can remove the needle and your eTrex connector is finished.