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PaulinVictoria 01-26-2013 12:22 AM

Northstar M84
So I picked up a used Northstar M84 head unit. Looks nice, except I can't connect anything to it :)
I was hoping the NMEA input would be on the same connector as the power (LT8) but alas it's on a different connector.
I don't fancy paying $200+ for a GPS antenna to plug into it, and of course I can't get the cable to allow me to connect an NMEA anymore.
Anyone know where I can get LT8 connectors, and what the pin-outs on the Fuel/Nav connector are so I can make my own?

PaulinVictoria 01-26-2013 06:06 PM

Re: Northstar M84
Aha! Picked up a used Navman 1240 GPS receiver in the Boater's Exchange, $20. Plug is all busted up but I've managed to connect it Heath-Robinson style. Now to go to the boat, power it all up and see if anything actually works.

PaulinVictoria 01-26-2013 09:16 PM

Re: Northstar M84
It works! Bargain. So that's a full colour, 8" multifunction chartplotter, with charts from Puget Sound right round Vancouver Island, with a dedicated GPS receiver, all for $120. Sweeeeet. Just need to figure out how to mount it now.

PaulinVictoria 01-26-2013 11:14 PM

Re: Northstar M84
FYI, in case anyone is googling this in future.
Navman 1240/Northstar 124 GPS unit pins:
1 - ground
2 - power input (+7 to 32v)
3 - not used
4 - NMEA data in
5 - not used
6 - NMEA data out
7 - not used
8 - not used

Northstar M84:
Power/data cable
Black - ground
Brown - not used
White - NMEA out
Blue - NavBus -
Red - power in, +10-35v
Orange - NavBus +
Yellow - auto power, connect to Red for auto power on/off, or connect to ground (or float) for manual power on/off
Green - external alarm output. Switches to ground on alarm, 200mA max.

I'm still trying to track down the other pin configurations, in particular the sonar and the fuel/NMEA input sockets. No luck so far...

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