Yes, what I described will work with the NMEA/NMEA settion on your COMM tab. Also make sure you have Port 2 tuned to the ON position (I'm assuming a 182 has the second port).
I have a Furuno 600L and have its data output being sent to a Garmin GPSMap-76, a GPSMap-2006, and a Raytheon SL-72 Radar. Each of the three listeners is accepting the data supplied from the Furuno
Hell, I may as well confuse you just a bit and tell you the reso of my wireing setup. Maybe this will give some heart to those who are a bit intimidated by doing the interface connections:
OK, when I say 76 I mean a Garmin GPSMap-76. When I say 2006 I mean a Garmin GPSMap-2006, 600L is the Furuno depth finder, SL-72 is the Radar, 59 is an ICOM M-59 radio with DSC, 127 is an ICOM M-127 Radio with DSC, and AP-12 is the Auto Pilot.
Here goes:
The 600L provides data (speed, depth, and temperature) to the radar (which uses the speed in some situations), the 76 and the 2006.
The 76 provides navigation data to the 600l and location data to the M-59 for its DSC function.
The 2006 provides navigation data to the SL-72 and the AP-12, and location data to the M-127.
None of my connections are done by way of soldered wires, and certainly not by crimped wires (I'd just as soon just twist them together and wrap them with scotch tape).
I made up a junction box by drilling a bunch of holes, which were filled with stainless screws, in a chunk of plexiglass and then pouring some epoxy into a shallow tupperware container. The plexiglass was set in the epoxy and the ends of the screws, which now stuck up as studs, were left exposed. Then every wire from every device was run to one individual stud. There is one row of studs for the positive side and one row for the negative side. After that I did my interface by making up jumper wires that connect the studs. Here's what it looked like in the making:
With this setup I no longer have to cut and splice in wires when I change electronics or add to the mix. All I have to do is remove the nuts from a couple of screws and remove the data wire for that device, stick in the wires for the new device and use jumpers to connect it to whatever I want. This works well for me.
Now, on the question of capturing depth data with waypoints. I have been assuming that I am capturing that information because the depth display is there on my 2006. So I just went and took a look at my waypoints and found that one of them that I resaved this year does in fact have the depth saved with it, and has it down to the tenth of a foot (this is the Sea Buoy at Oregon Inlet, which happened to be in 56.4 feet of water at that time). I also found a couple of others that have depths associated with them so they too must have been captured while out on the boat. Apparently it does work.
What I was concerned about was that Garmin may might have set up the software such that only depth data supplied from an attached GSD-20 would be captured. That is apparently not the case.
Thom
"I command thee, O fish of the ocean, rise to my bait"
NMEA 0183 interface for Garmin and Furuno
