Furuno NAVNET 1933C-BB - Manual (Page 32)

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8. Coat ground terminal and ground point with silicone sealant as shown below.
Ground
wire
Hex bolt
Flat washer
Spring washer
Flat washer
Hex nut
Silicone
sealant
Hex nut
Weld here.
Silicone
sealant
Ground
wire
antenna
unit
OR
Flat washer
Spring washer
Ground
wire
GROUND
TERMINAL
GROUND
POINT
Hex nut
How to coat ground point and ground terminal with silicone sealant