Many have "rolled their own" when it comes to how they use their Vibratone / Leslie but here's the rundown on how it was supposed to be done.
(The Following description is based on the harness I've seen with my own eyes with a Model 16 Leslie. It would seem from the owners manual that the Fender version was electrically identical, but physically different.)
The idea was for the Leslie to supplement the original speaker in a typical guitar amp. Since CBS owned but Leslie and Fender, it was the Fender "style" that acted as a model for making the connections.
Fender amps, such as the Twin and many others, have a speaker cable that connects to the speaker(s) inside the guitar amp and ends in a 1/4" plug. That plug is then inserted in the "Speaker" jack on the rear of the amplifier chassis.
The procedure was for you to take the plug out of the jack on the amplifier and plug it into the 1/4" jack on the Leslie harness, then you were to take the 1/4" plug on the Leslie harness and plug it into the speaker jack on the guitar amp (NOT the Ext. Speaker jack!)
The other end of the harness, a "Leslie" plug, was then plugged into the crossover (a short length of PVC pipe with Leslie connectors in the ends).
And finally, the footswitch, which had two wires coming from it, had one wire plugged into the other end of the crossover, and the last wire was plugged into the rear of the cabinet.
Today, most cabinets no longer have their harness / footswitch assembly. We do. The assembly shown below is our better built answer. The original was flimsy and prone to loosing parts, ours is rock solid and all in one piece.
![]() Unit shown had an optional mod for a remote footswitch
*This product is now being sold by Speakeasy Vintage Music.
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