Standard Horizon MATRIX AIS/GPS GX2200E Owner's Manual page 26

External Speaker Connections
Ferrite Core
Gasket
Cap
Wall
Routing Cable
Mounting Bracket
Nut
NOTE
Caution!: Before cutting the cable, it must be disconnected from the rear
panel of the transceiver.
The routing cable can be cut and spliced, however care needs to be
taken when reconnecting the wires to ensure water integrity.
After cutting you will notice there are the following wires:
Yellow, White, Brown, Gray, Blue, Green, Red/White , Shield
 
 The red/white and shield wires are wrapped in foil. Remove the foil,
and separate the red/white and shield wires.
WARNING
It is not recommended to plug or unplug the CMP30 ( RAM3 ) Remote
Station Microphone into the routing cable while the radio is on.
Page 26 GX2200E