I think elektrodrive is referring to TB11,which are the six screw terminals on the SCR card.
TB11-1= Accelerator input 3.5 V off position 0V @ Full Throttle
TB11-2= Brake input (+ Battery volts)
TB11-3= Seat Switch input (+ Battery volts)
TB11-4= BV after Keyswich input (+ Battery volts)
TB11-5= Forward Switch input (+ Battery volts when forward is selected)
TB11-6= Reverse Switch input (+ Battery volts when reverse is selected)
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