has an old depth
finder that reads out on the traditional dial over the companionway hatch
that is hard to read at night. I installed a second transducer
to read through the hull
for attachment to my older Garmin
because it is easier to see at night. It turned out that I needed to get a different power
cord/wiring harness for the Garmin
that had a socket to plug
in the transducer
. I discovered that the present harness instead has a socket that fits a plug
that runs to an external GPS antenna
in a puck
on the rail. In other words, I have two harnesses, one that plugs into the antenna
and the other that plugs into the transducer, and in both cases there are also some extra color-coded wires left hanging loose. I would be able to either hard wire those or attach them to my own connecting plugs. Garmin support was not entirely helpful. My questions are these:
1) The GPS
seems to work
fine with the external antenna disconnected -- is there any advantage to keeping it?
2) Am I right in assuming that I could use the loose wires on either harness to connect the device that doesn't have a matching plug, that is, either the external antenna or the transducer?
3) Is it likely that the color coding on the Garmin harness is matched by the color coding on either the antenna or the transducer?