NMEA - Furuno 585 to Garmin 4208

[rick doc]

Greetings:
I will be at my boat tomarrow to connect the necessary wires to send data from Garmin Plotter to Furuno Sounder. If I'm not mistaken is it four wires to connect together? I picked up a plastic bus bar from Radio shack and was wondering if there is anything else I need to get a do?
If both units are alreadt grounded do I still need to connect the common ground?
Any advise is appreciated.
Thanks,

[vanc]

Originally Posted by rick doc

Greetings:
I will be at my boat tomarrow to connect the necessary wires to send data from Garmin Plotter to Furuno Sounder. If I'm not mistaken is it four wires to connect together? I picked up a plastic bus bar from Radio shack and was wondering if there is anything else I need to get a do?
If both units are alreadt grounded do I still need to connect the common ground?
Any advise is appreciated.
Thanks,

Quick answer...... Yes run to the ground.
I am setting up a garmin 545 NMEA to my Furuno 620. I have had quite a time getting it right. Use the gps NMEA out to the ff in, then take the mating ff wire and run it to the ground (neg. on the bus). I did that and VIOLA !!!! it all came on. Did the same in the other direction and I get the ff temp on the gps, and it should mark quick waypoints from the FF. I also did NMEA with my DSC radio and got that working the same way. The second gps outNMEA to the in of the radio, and the other wire of the radio to the neg bus.

I set all machines on my work bench with a 12v power supply to do all the wiring before I install in the boat, I'm gonna write down every connection. If you have a problem post again.

[rick doc]

Both of my units are already grounded I believe. I am connecting the two from the FF and the two from the plotter. Which unit gets grounded? The bus bar I bought from Home Depot does'nt have a ground.

[rick doc]

Should I also do NMEA Ground from Garmin Plotter to Furuno NMEA Grounbd or just the four wires??

[ZX2050]

I did a similar thing on my boat, Garmin 2210 to Furuno 585. The Garmin only has one negative (ground) wire for all of the units NMEA circuits, whereas the Furuno had positive and negative leads for each NMEA wiring circuit. I used 3M Scotchloks to insert and splice in additional negatve circuits. Worked great. Hope this helps.

[vanc]

Originally Posted by rick doc

Both of my units are already grounded I believe. I am connecting the two from the FF and the two from the plotter. Which unit gets grounded? The bus bar I bought from Home Depot does'nt have a ground.

The wire went out of the garmin, to the in of the furuno, then the matching wire of the furuno to the neg. (battery) that grounded the loop back to the garmin. Hope that makes sense. I can give you the colors, but they may not be the same on your garmin.

[rick doc]

I went down to the boat today and the 1st thing I started on was wiring the two units together. I connected the four wires little hairy wires on a terminal bus. However, I didn't connect the furuno Red to the Garmin Red and the Black to Black. I checked the settings on the Garmin and turned on and set the Wass on the Furuno 585. I also check the settings on the Garmin and they looked like they were fine. I don't think I set the port 1 and port 2 on the Garmin or the Furuno 585. I was very confused with setting the sounder so I one point I re-set it to the factory settings. Should I have connected the red to red and black to black to complete the process?

[vanc]

Got your PM.

I dont know what your red and black are other than they must be the main power wires.

Here is how it worked for me.
My garmin 545 has 2 NMEA outs. blue and grey
I picked the blue one according to the diagram in the instructions.
I connected it to the in of the Furuno 620 that is (rd-a) Yellow, the mating wire to the yellow according to the diagram in the instructions is green so i ran that to the battery NEG. VIOLA I got gps position data on the furuno.

Set the furuno like this
MENU---SYSTEM---NMEA---then set the smaller box like this:
VERSION 2.0
PORT IN/OUT (this one should turn it on.)
OUTPUT ON (iF YOU WANT) (I did this and got ff info on the garmin)
WASS-00
TTL OUTPUT-TTL (I dont know what that is)

Now get one of the nav settings on the rotary knob to have position and it should be there.

In the garmin MENU---CONFIGURE---COMMUNICATIONS Get serial ports 1 and 2 to read NMEA. That should send it out to whatever. I did the seciond NMEA out grey to my radio for DSC. That works too. It wasnt easy, but the diagram in the garmin bood shows the wire coming out of whatever NMEA device going to the neg of the battery.

Again hope that helps, it was lots of trial and error, but in the end it made sense.

[rick doc]

When i go down next weekend I may re-try this again paying carefule attention to connections. I connnected them bare wire to terminals when perhaps I should have used the smallest spade connectors (red). I still would like to know if I should be connecting the grounds and red wires together?

[vanc]

Still not clear on what those are.
Not the main power wires?

Red is Battery POS.
Black is Battery NEG.
Not too often are red and black connected together.

Do you mean small NMEA wires red and black?
Mine does not have those colors.

[HeadHunt]

Originally Posted by rick doc

When i go down next weekend I may re-try this again paying carefule attention to connections. I connnected them bare wire to terminals when perhaps I should have used the smallest spade connectors (red). I still would like to know if I should be connecting the grounds and red wires together?

You can't guess at the colors. You have to have a wiring diagram. I just wired a 3010c on a terminal strip. Actually used two strips because there are 12 wires coming out of the plotter. This is not a buss bar. Each position on the strip is independent of all the others except the one straight across from it. I used this to connect all the little data wires instead of butt splicing. The wires on the right are 9/12 of all the plotter wires. The first two are positive/negative. The next three are the GPS antenna and the bottom four are the communication ports. Violet/Grey goes to VHF radio (comm port 1 in the plotter set-up) and Brown/Blue are comm port two, where I will hook my Furuno sounder data wires. If you look at the tag just below the fuse holder you can see the wiring color codes. I hope this helps. Your 4208 may be totally different.

[rick doc]

I think the Furuno unit has them but not the Garmin. I have all week to figure this out and a couple of e-mails sent out to Furuno & Garmin.
Thanks,
Rick

[rick doc]

HeadHunt,
Thanks for the pick and info.
Rick

[tommymo]

i was thinking about buying a 585 and integrating it with my 4208. For anyone who has done this what information are you sharing between the units?