there is not one
one of the map sensor or vacuum switch.
no switch,fan control is determined by the engine control unit with input from the coolant sensor
The fuel relay on a sunbird in under the hood on the left side just by the water over flow tank.
chiltons manual has wiring diagrams for that
Bad switch in steering column? diffrent fuses.
There are several relays. ABS relay is mounted to the firewall driver side. Radiator fan relay is mounted on the inner fender by the battery. There are also 3 mounted on the passenger side on the inner fender back by the windshield.
On the '92 sunblrd SE the power for the lights to from fuse to headlight switch to dimmer switch to bulb, no relay involved.
Go and buy an shop manual on your car and look it up.
Either the flasher or the turn signal switch is bad.
The 1991 Pontiac turn signal flasher relay switch can be found beneath the drivers side dashboard. The turn signal flasher relay switch will be above the gas pedal.