nmea connection

[Xplicitlnck]

I just purchased a north star vhf. It shows lat and long information. My question is it has 4 nmea wires. Two nmea in + and - and two nmea out +and -
The boat came factory with raymarine electronics all networked through sea talk. The auto pilot is integrated into this system. On the main black box (I think its the brain) of the auto pilot system it has an nmea out option. If I hook the nmea in +abd - wires to this will the fix show up on the vhf? May be a stupid question but is the out nmea wires just to connect another electronic?

 

[Xplicitlnck]

Nobody? ! Anybody? ! Somebody? !

 

[Xplicitlnck]

I also have a stand alone garmin gps plotter that has 2 names out wires. The garmin has it's own hockey puck gps receiver. Would this work?

 

[ZZ13]

Try it. It won't hurt anything. You can usually have no more than two "listeners" off a NMEA0183 "talker". Some devices drive a new NMEAout but some just pass the NMEAin to the NMEAout terminals. So you may not know which one is a new "talker" and which one is just passing on another "talker" until you try it. For example, I have 2001 Raymarine stuff all networked together on Sea Talk (RN300 GPS, RL80C chart plotter/radar, autopilot computer). I needed to get NMEA0183 to a separate L760 Fishfinder and I did that by wiring the RL80C NMEAout to the L760 NMEAin. That same RL80C NMEAout was also already going to the autopilot computer. I also wanted to get NMEA to the VHF to get LAT/LONG for DSC (they didn't connect them at the factory). I tried just adding another NMEA split off the RL80C to the VHF, but there turned out to not be enough signal power for the third drop. Then I tried connecting the L760 NMEAout to the VHF hoping it was driving the NMEA as a "talker'. But it wasn't and was just passing the NMEA from its "in" to its "out" pins. I then found the NMEAout for the RN300 was not being used so I connected those wires to the VHF and now it gets the LAT/LONG it needs for DSC. So essentially I have two devices in my system capable of being the "talker". The RL80C and the RN300. With those two "talking" I can pass NMEA0183 to four other devices if needed. It took trial and error for me to figure it out.

Probably confusing, but I hope it helps.

 

[Xplicitlnck]

Thank you very Much for the info. One more question. There is 2 in wires and two out wires do both the positive and negative need to b connected? Or just the talker line. Sorry If that's a stupid question

 

[ZZ13]

Connect them both.

 

[Xplicitlnck]

Again thank you very much!

 

[JBJ]

I connected my old Raytheon autopilot to my Garmin 4212 using NMEA 0183 along with my vhf which feeds asc to the Garmin

 

[Xplicitlnck]

I connected my old Raytheon autopilot to my Garmin 4212 using NMEA 0183 along with my vhf which feeds asc to the Garmin

We're did you connect the wires to on the autopilot unit? On mine (forgot the model number) there is a black cover that slides down and pops off to reveal a line of very small thin wires that are inserted into a small hole with push pins I guess you would call them. A bunch are labeled joystick heading sensor ect. Then there is an nmea out. All that probably makes no sense but I tried