Connecting humminbird helix 5 to lowrance link 5

[Nordburg2001]

On to my next dilemma! One for the technical gurus....
My lead came in the post on the day we were leaving for the iom, on digesting the wiring diagram it looked to only use 1 wire to connect both together, they did mention lives and earths to to power the radio but as both gps and vhf already have their own power supply I didn't connect them, however the units didn't communicate with each other, I had no time to look any further as we had to leave!! Have any of you guys had similar problems or know how to wire these things?? Thanks in advance, Tim.

[j.i.wilson]

I don't know the units you are connecting but....

It definitely requires two wires for one way comms and minimum of 3 sometimes 4 for two way. My guess is you have connected the positive send or return. If you can post a photograph of the wiring for both units (or a link?) I may be able to help more.

[Nordburg2001]

Will post a few pics when home from work, cheers

[Bern Hanreck]

Have to disagree with J.I.W | I don't know these units either but if both are powered from the same supply ( with a common Gnd [ or 0 Volts ] ) they may well only require a nmea out from the gps/chartplotter to the nmea in on the radio/receiver .

ie only one wire !

I suspect you have to set up other parameters ( eg an output port on the gps )

[Nordburg2001]

Will post a few pics when home from work, cheers

[Nordburg2001]