[Sergio]

Yes there is a micro switch inside the Vglide, the pie shaped box referred to as a Multi-Step potentiometer.

Power comes in from the key switch on the Blue wire and the switch completes the connection to the Green/White wire that goes to the FNR micro switch.

The FNR micro switch completes the signal from the Green/White wire to the White/Black wire that goes to the Solenoid to provide the positive activation side of the circuit.

Check the FNR micro switch first since it is the easier one to access.