Furuno GP-150-DUAL - Manual (Page 87)

10. INSTALLATION
10-19
4) Solder a ground wire to the shield.
5) Dress the shield and the outer sheath with heat shrink tube, leaving 30 mm
of shield and outer sheath exposed.
6) Heat the heat shrink tube.
7) Remove the insulation of NH connector (supplied) 3 mm.
8) Heat the heat shrink tube.
How to fabricate the signal cable