My 1991 imperial left power seat stopped working at all. Where is fuse or circuit breaker ? Everything stopped working on the left side but the right seat works fine.

It Is under the hood in the fuse and relay center. Consult the owner's manual or use the bottom of the lid for ID of fuses.

You have a power seat circuit breaker in rear fuse box, that circuit is hot all the time. The orange wire carries voltage to seat adjuster switch. You need to check ground for adjuster switch, also.

If circuit breaker is overheating it will cause an open circuit.

They run off the same circuit breakers. In fuse box, left side dash, open driver door for access

There is no fuse for the power seat's , has a circuit breaker ! Does your olds have memory seat's or just plain power seats ? If it has memory seats it has an electronic control module that comes into play . Don't think going after the circuit breaker would do any good , they seldom go out . But you never know ! You will find the power seat circuit breaker located here Relay Block - Body
Left side of the dash, to the right of the I/P fuse block.

You should test for B+ voltage at the seat switches , If none work your way back to the power source .

I know on a 83 its located by the glove compartment ,, try looking there

Power is supplied to the Power windows and sunroof through the power window circuit breaker. That circuit breaker is supplied power through the RAP (retained accessory power) Relay, the RAP relay also supplies power to the radio. The RAP relay is also fuse protected by the RAP fuse in the under hood fuse block. The RAP relay is energized by the BCM body control module.

The RAP relay is responsible for the radio and windows working after the igntion is turned off.

The first place to check would be the RAP fuse in the under hood fuse block and then the RAP relay in the Body fuse block.

A list of the BODY relay block located on the left side of the dash to the right of the interior fuse block is below:

(1) Park Lamp Relay (2) Courtesy Lamp Relay (3) Retained Accessory Power (RAP) Relay (4) Power Seats Circuit Breaker (5) Power Windows Circuit Breaker (6) Inadvertent Power Relay (7) Door Lock Relay (8) Headlamp Ground Relay (9) Driver Door Unlock Relay (10) Door Unlock Relay(1) Park Lamp Relay
(2) Courtesy Lamp Relay
(3) Retained Accessory Power (RAP) Relay
(4) Power Seats Circuit Breaker
(5) Power Windows Circuit Breaker
(6) Inadvertent Power Relay
(7) Door Lock Relay
(8) Headlamp Ground Relay
(9) Driver Door Unlock Relay
(10) Door Unlock Relay
(1) Park Lamp Relay (2) Courtesy Lamp Relay (3) Retained Accessory Power (RAP) Relay (4) Power Seats Circuit Breaker (5) Power Windows Circuit Breaker (6) Inadvertent Power Relay (7) Door Lock Relay (8) Headlamp Ground Relay (9) Driver Door Unlock Relay (10) Door Unlock Relay (1) Park Lamp Relay (2) Courtesy Lamp Relay (3) Retained Accessory Power (RAP) Relay (4) Power Seats Circuit Breaker (5) Power Windows Circuit Breaker (6) Inadvertent Power Relay (7) Door Lock Relay (8) Headlamp Ground Relay (9) Driver Door Unlock Relay (10) Door Unlock Relay

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Replacement

1. Access the fuse panel from the left of the steering column.
2. Locate the blown fuse and pull out. DO NOT TWIST.
3. Take note of the ampre number written on the top of the fuse. To install:
   
4. Push a new fuse of the same ampre into the receptacle, making sure the contact is being made on both sides of the fuse.

LOCATIONS Headlights and Highbeam Indicator

• One 18 amp circuit breaker (22 amp in 1987 vehicles) incorporated in the lighting switch.

Front and Rear Marker, Side Parking, Rear and License Lamps

• One 15 amp circuit breaker incorporated in the lighting switch.

Windshield Wiper

• One 4 1⁄2 amp circuit breaker located in the windshield wiper switch.

Power Windows

• Two 20 amp circuit breakers located in the starter relay and the fuse block.

Power Seats and Power Door Locks

• One 20 amp circuit breaker located in the fuse block.

Hazard Flasher REMOVAL & INSTALLATION NOTE: The hazard warning flasher is located on the rear side of the fuse panel.

1. Locate the hazard flasher in the fuse panel.
2. Pull the flasher out. DO NOT TWIST. To install:
   
3. Push new flasher into place making sure a good contact is made with both terminals.
4. Test flasher to make sure they function properly.

Various Relays LOCATION Cooling Fan Controller

• Located behind the left side of the instrument panel.

Cooling Fan Controller Module

• Located behind the right side of the instrument panel.

Cooling Fan Relay

• Located in the air conditioning cooling fan control module.

Electronic Control Assembly

• Located under the left side of the instrument panel.

Electronic Engine Control Power Relay

• Located behind the glove box on the right side of the instrument panel.

Fuel Pump Relay

• Located behind the glove box.

Horn Relay

• Located in the fuse block.

Fig. 1: Main fuse box located on driver's side to the left of the steering wheel, above the brake pedal


This is the best info I could find....I hope this helps ya!

Take a look at thse two and replace them:

Fig. 3: Relay and flasher module — Dynasty, New Yorker (1989–93), Fifth Ave. and Imperial

(This is for the power windows)


The fuse panel, which contains fuses and circuit breakers, is located behind the glove box door. Additional fuses are in the Power Distribution Center located near the left side strut tower in the engine compartment. Each item is identified on the cover of the Power Distribution Center.

There is an additional relay module (relay and flasher module) located to the right lower corner of the instrument panel (Dynasty, Imperial and Fifth Ave.) or behind the cup holder (New Yorker). A relay or flasher can be removed by pulling it straight down from the module.

Left side of the dash, to the right of the IP fuse block. Its a 25 amp circuit breaker, an aluminum cased breaker. CHECK FOR POWER ON THE SEAT SWITCH "A" TERMINAL AND GROUND ON THE "D" TERMINAL. IF YOU HAVE POWER AND GROUND THE SWITCH IS BAD.

Power windows, Seats, and everything in a car that has heavy duty motorized accessories has a circuit breaker instead of fuses. They are located in the fuse box and are silver in color