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NMEA connections no worky

Old 04-25-2003, 01:14 PM
  #1  
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Default NMEA connections no worky

I'm trying to get my Garmin GPS76S to talk to my
Furuno LS-6100 and ICOM 402 VHF.
Here's how I hooked them up...
Garmin brown to Furuno yellow and to inner part of RCA plug of ICOM
Garmin white to Furuno white
Garmin black to batt ground, Furuno green and blue, and outer part of ICOM RCA plug.
Garmin red to 12v(+)
When I powered everything up and switched the Garmin mode to NMEA, the Garmin display started fluttering and going black and coming back for few seconds, then it quit alltogether. I powered it back up but it immediately shut off again. It works fine in my car in regular Garmin mode.
Hope someone can offer some assistance. Thanks.
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Old 04-25-2003, 04:02 PM
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Default NMEA connections no worky

I could guess at the colors...but I don't have exact diagrams for either unit. You want to connect the transmit + on one unit to the receive + on the other. Connect all the - wires together.

If you connect a + to ground, bad things happen...like what you're seeing. Most electronic devices don't like short circuiting their output signals. Don't fret...things will probably pop to life when you get it wired right.
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Old 04-25-2003, 08:16 PM
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Default NMEA connections no worky

That configuration appears ok apart from the Furuno "Blue".

Unless Furuno have changed the colours White/Black was the data out and Yellow/Green was input with the Black and Green being the respective common grounds.

The Furuno probably has 2 output modes, NMEA and Furuno CIP. If set to CIP there would be no worky.

Cheers, Kerry.

I never get lost, everybody tells me where to go!
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Old 04-26-2003, 07:17 PM
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Default NMEA connections no worky

Kerry,
The marine electronics guy I bought the 7-pin Furuno cable from told me the wiring was:
White - data out+
Blue - data out-
Yellow - data in+
Green - data in-
Red+ (for feeding external device)
Black- (for external device)
and pin 7 is for the shield.
I'm going to try your suggestion though about black instead of blue for data out-
Thanks
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Old 04-26-2003, 08:08 PM
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Default NMEA connections no worky

Chesterpeake, no that's a different cable from the normal NMEA 4 wire connection cable Furuno used to use on just about all models.

If that's the cable (and the electronics is right) then it's blue. I would have thought there should have been some actual paper work (connections etc) with the cable.

Cheers, Kerry.

I never get lost, everybody tells me where to go!
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