Note:
connector: 4 Pin Molex > single lead
SWC radio specific lead 42cx401 SWC interface 42a-xxxx-xxx
dip switches (ON/OFF)
Use case:
JVC single lead connector
Kenwood single lead connector
DIP switches 42cx401:
JVC > ON/OFF/ON (ON/ON/ON)
Kenwood > ON/ON/ON (ON/OFF/ON)