Hello Mountaindew,
On the amplifier compartment door you will find the connections that relate to connecting the jukebox to various items, remote speakers, volume control and reject etc.
From the amplifier (130 watt) you will have a connection marked volume (this is a five pin molex plug but it only 3 wires in it) pins 1, 2 and 5 these are terminated on the amplifier compartment door. you will find a shorting or linking plate on these connection to convert the standard two wire control to dual channel.
The link for standard 2 wire shorts out pins 1 & 5 (this would normally be the red wire) ground or the common connection is black and white is cancel.
If you have the manual the connections are shown on page 2-24.
Regards
Alan
Alan Hood
ami-man
UK