Aux . fuel tank switch

[franko72]

I have the factory fuel switch that is located at the left of the dash bezel on the dashjust above the left A.C. vent.It is for switching the readings from tank to tank only for the fuel guage .I think that it has a short or is a bad switch. does anyone have this type of switch and does the knob rotate a full circle or does it have stop points when it is turned. Wonder were to purchase a new one? Mine works as long as no one else messes with it.but if I hit a bad bump it sometimes puts the guage pegged.