mystery lead in Peavey amp?

[tedmich]

Whats up with this lead to nowhere in my XXX?
its the center one a Red with yellow stripe

it is even listed on the PCB?

[Jazz P Bass]

It's a center tapped winding off of the transformer, but it is not being used in that circuit.

My take is that it is clean way of terminating the wire.

[Enzo]

Yep, and the same transformer wire harness can be used for other models which DO use the center tap.