Commodore 1802 User Manual page 9

To connect the monitor for COMPOSITE display, you'll need
either a five-pin cable with two plug ends (instead of three) or RF
cables to hook up composite from a computer, VCR or TV tuner.
1. Plug the end of the monitor cable with five pins into the VIDEO (or
video output) port on computer.
2. Insert the two plug ends of the cable into the two sockets on the
top row of the panel on the back of the monitor, as shown:
• the white output plug goes into the AUDIO I jack (WHITE) on
the monitor.
• the red output plug goes into the VIDEO jack (YELLOW).
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