'69 Deluxe Reverb boost ckt foot switch

[Pete1950]

Have this '69 in the shop for repair. Has the push-pull boost volume switch. But it also has a separate 1/4" Switchcraft jack for a boost ckt foot switch, separate from the RCA's for the reverb and trem. I can find a schematic for the push-pull ckt by itself but can't find a diagram/schematic for how the TS jack is wired into the boost ckt. Any help out there?

[2deaf]

'79? 

[pdf64]

May be an 80s II series 'Rivera era' model?
Footswitch http://www.stratopastor.org.uk/strato/amps/prii/footswitch/footswitch.html
http://www.stratopastor.org.uk/strato/amps/twoseriesfenders/twoseriesfenders.html