The HiLine™ External Volume Switch is used to control the exact same functionality of the switch on each HiLine™ Sound System. The external switch allows easy access to the volume and setup on the sound system as it can be easily mounted on the outside of a model train.
Find the correct connector on the HiLine™ Sound System the switch will be installed. On the Stamp systems, use the 6 pin connector. On the Full Edition HiLine™ sound
systems, use the 6 pin connector that is closest to the speaker output. See drawing below.
Connect one of the two wires from the HiLine™ External Volume Switch to the black wire on the six pin connector from the HiLine™ Sound System.
Connect the remaining switch wire to the red wire on the HiLine™ Sound System.
Install the switch on the engine. This is best accomplished with a small bit of glue.