Navman 3100 Wiring?

[Pat Anderson]

OK, David installed Navman 3100s in both Anna Leigh and Daydream. We had the first opportunity to be out on the water in Daydream this weekend to test it out. Everything works fine EXCEPT the functions that depend on the NMEA input from the GPS. After setting up to tell the unit that there is GPS input, the screens come up for fuel economy (mpg), speed, range and so forth, but the values are all zero, so obviously something is miswired. If anybody out there who has installed a Navman 3100 with GPS input can shed some light on what we might be missing, it sure would be appreciated! The NMEA input is coming from a Raymarine C80 on both boats...

[Anita Marie]

Hi Pat,

Navman has the NMEA wiring wrong in the installation manual. I can not remember the color coding and I don't have the boat close by. I will be taking the boat out of the water next week for the canvas install if you want to wait that long.
I am only guessing but I think the NAVMAN NMEA wires are yellow and ?. I think you need to swap the polarities. Hope that helps.

[Alyssa Jean]

Thanks Fred. The wires are yellow and white. The white is, according to the factory manual, Nmea IN , which is how I wired it. The yellow is supposed to be Nmea out. So I wired it to the white. The negative polarity for the Nmea is "shared" by the black wire with the negative for the display.

Now that I look at the wiring on my boat, I wired it to the yellow """by mistake""". So I need to take the boat out and see if it works as is.

Only thing right now is that there are about twenty miscellanius (Hey Bill of the NaNag type,,,spell check can't figure miscellanius out.) sized logs on our ramp from the last weeks storms.

Any one else have any input??
Les???

[Pat Anderson]

Try "miscellaneous"...I think "Miscellanius" was the Roman god of randomness!

[Pat Anderson]

Well, that's a start...Thanks, Fred!

[Anita Marie]

David, that's it. The negative is the common black but the NMEA in/out are wrong. I think you only need to remove the white and connect the yellow for the NMEA in.

[tpbrady]

Pat,

You can put the gps into simulation mode to verify it works when you turn the ignition switch on. You'll get a speed over ground reading. I sent a comment to Navman on the accuracy of their manual and I got a form e-mail response. I even called them on the phone and they wanted me to return the fuel flow meter since they thought it was defective.

[Pete in NY]

I don't know if this will help since I have a Garmin 3010C and Floscan 9000, but I had to turn on the data port for NMEA communication between the units in a setup menu in the software of the chartplotter. The data port was off by default.

Just how big were the waves you have taken your 25 into?

Happy New Year,
Pete in NY

[Pat Anderson]

Thanks, that is another thought worth looking into - will check the Raymarine manual to see if there is anything we need to do in its setup menus to turn on NMEA output - I HOPE Les already did that, since he wired the Raymarine to the Icom for the distress signal.

[Sneaks]

[Pat Anderson]

Another question we had - we were wondering if we could just parallel the NMEA or whether we needed to daisy chain from chartplotter to Navman to Icom...I will fool around with the wiring some today if I have time. Really want to get the Navman showing fuel economy (mpg).

[Sneaks]

It's easy to experiment, Pat. You're not gonna blow anything up if you stick to the NMEA leads. I'm 25 miles away from the Jenny B and the manuals, but I think the two needed wires are yellow and brown if I'm not having yet another Senior Experience. Absolutely sure it's the two going to your Icom though. Try paralleling with temporary leads, then try daisy chain. Both should work, then use whatever is most convenient. On bigger boats with longer runs, daisy chaining isn't as reliable as paralleling, but jeez, you're only looking at a couple of feet.

I installed a little terminal strip behind the helm and fanned out all the Raymarine NMEA leads onto it. Then everything that needs NMEA goes to the strip.



Don

[Pat Anderson]

OK, armed with the info that the YELLOW wire is the NMEA + in and the WHITE wire is the NMEA + out on the Navman cable, backwards from what it says in the manual, and BLACK is the 12v - / MNEA ground, I attacked the wiring a little bit ago, and now it appears to work, as far as I can tell. The Navman speed display tracks the C80 speed display, which fluctuates between zero and 0.1 kt parked in my driveway, probably due to GPS error, but unfortunately the C80 did not simulate speed in Simulator mode. It simulated a position (Santa Catalina, not bad!) and depth, but zero speed - evidently simulating being docked! But whatever the C80 was showing for speed, the Navman showed the same thing, so I am 99% sure it works. BUT - this is for David - I think the Icom NMEA is wired in backwards. Look at it and think about it, the yellow is the NMEA + (out on the C80, in on the Navman). Coming from the Icom NMEA jack are red and black wires - wouldn't you assume the red is NMEA in + and the black is NMEA in - ?

[Sea Angel]

Hi Pat, et all;

Looked up my NEMA wiring hookup_

a. ICOM502A.............NEMA IN = red
................................[RMC, GGA, GLL - supplied from 2006c]
b. ICOM502A.............NEMA OUT = white
................................[DSC, DSE - supplied to 2006c & C80]


c. GARMIN 2006C........NEMA IN = violet
..................................[DSC, DSE from 502A]
d. GARMIN 2006C........NEMA OUT = grey [channel 2] [RMC]
..................................[ RMC, GGA, GLL to 502A; RMC to 3100]

e. RAYMARINE C80.......NEMA IN = white
...................................[DSC, DSE supplied from 502A]

f. NAVMAN 3100...........NEMA IN = yellow
..................................[RMC supplied from 2006c]
g. NAVMAN 3100..........NEMA OUT = white
..................................[not used]

The new(2004) 'Installation Manual" for the 3100 does reflect the above wiring hookup on page 17 & page 19, Appendix A.

Common signal NEMA ground for all units is their 'black' lead.
Both the C80 and 2006C has a GPS receiver.

The drawback from this setup is that I can not directly transfer waypoints from the GARMIN to the C80; which would be very convient. I suppose I could create an 'A:B' switch for data transfer in place of the 502A, to the C80, from the 2006c.

The advantage of data from the 502A is that any Distress Call that is received on the 502A will be seen on the 2006c, and on the C80.

The C80 also has SeaTalk hookup for the ST6001 S1G Autopilot.. If I had a means to connect into the SeaTalk module, I think I could transfer the GARMIN waypoints at will; but, I am not sure enough to take on the cost for the added interface.

Does anyone have a similar setup? Has anyone attempted this?

Hope this is clearer enough to help.

I did get shocked when I lost my 'range' function on the 3100 last weekend. The 2006c channel2 NEMA port was disabled. I must have been playing and not paying, 'attention'. One of those suttle little thingys that will get you every time.

Happy, healthy and prosperous New Year.

sea Angel

[dogon dory]

Sorry, Folks - Post Deleted By Author