Help with Furuno install
Submitted by Gunnawundai on Thu, 2025-12-11 16:15
I have bought a Furuno combo 1971, looking now at the wiring.
The installation manual says, red wire to power, black wire to earth and shield to hull of the boat.
I presume this shield is the inner silver paper like material surrounding all the other wires, excluding the black and red wire, inside the cable.
Does this sound reasonable? There was no such connection on the removed sounder. What ramifications are there if this shield is not connected?
Thanks if you can help.
Livewire
Posts: 323
Date Joined: 25/11/16
My fruno was just red and
My fruno was just red and black. Power. The transducer has the shielded wire. When I upgraded to a new garmin sounder I used a garmin joining box. Easy just like a trailer plug plenty of youtube on this. The shell protects from interference.
Gunnawundai
Posts: 62
Date Joined: 04/04/18
Thanks, though it was not
Thanks, though it was not needed
Gunnawundai
Posts: 62
Date Joined: 04/04/18
Well I found that the
Well I found that the shielded wire must be connected to the vessel hull otherwise the unit will not operate!!
dmck
Posts: 482
Date Joined: 07/03/19
so what happens...
... if yu have a fibre glass hull ??