The 1991 Eagle Summit has 50 electrical switch & relay parts with verified fitment on this page — 13 part types and 15 brands, covering the 1.5L L4 engine. Each part includes a manufacturer part number and application notes.
On the 1991 Eagle Summit, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. 26 parts of the 50 listed are Brake Light Switch (11 parts), Oil Pressure Sender / Switch (10 parts) and A/C Compressor Relay (5 parts). The other 10 part types cover the remaining 24 parts.
The 1991 Eagle Summit came with a single engine, the 1.5L L4, and every part is verified against it.
15 brands supply electrical switch & relay parts for the 1991 Eagle Summit, led by STANDARD MOTOR PRODUCTS (10 parts), ROSTRA (7 parts) and WELLS (7 parts), plus 12 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1991 Eagle Summit. 7 parts have it, including STANDARD MOTOR PRODUCTS RY51 (A/C Compressor Relay) and STANDARD MOTOR PRODUCTS RY51 (Blower Motor Relay). Each part number opens a page with every vehicle that part fits.
A/C Compressor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| DORMAN | 85170 | 🇺🇸 US 🇨🇦 CA | 5-Wire Bosch Style Relay | View on Amazon |
| FOUR SEASONS | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| WELLS | 1R1227 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | View on Amazon |
This table covers the relays that control the A/C Compressor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 A/C Compressor Relay parts are listed for the 1991 Eagle Summit, from STANDARD MOTOR PRODUCTS, DORMAN, FOUR SEASONS and 2 other brands. STANDARD MOTOR PRODUCTS RY51 carries the "Popular" badge.
This group includes STANDARD MOTOR PRODUCTS RY51, DORMAN 85170 and FOUR SEASONS 36100 and the remaining parts above.
A/C Condenser Fan Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
This table covers the relays that control the A/C Condenser Fan Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1991 Eagle Summit — FOUR SEASONS 36100.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 1711254 | 🇺🇸 US 🇨🇦 CA | A/C compressor Low Press Cut-Out Switchwith 2 Prongs | View on Amazon |
| UAC | SW5203C | 🇺🇸 US 🇨🇦 CA | Low Pressure Cut-Out Switch | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 A/C Refrigerant Pressure Switch parts are listed for the 1991 Eagle Summit, from GPD and UAC.
This group includes GPD 1711254 and UAC SW5203C.
A/C System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC | RE4476C | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the A/C System circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
One part is listed for the 1991 Eagle Summit — UAC RE4476C.
Back Up / Reverse Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 2011684 | 🇺🇸 US 🇨🇦 CA | Manual trans. | View on Amazon |
| FACET | 76084 | 🇺🇸 US 🇨🇦 CA | Manual trans.Base Model or ES Model | View on Amazon |
This table covers the Back Up / Reverse Lamp switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Back Up / Reverse Lamp Switch parts are listed for the 1991 Eagle Summit, from BECK/ARNLEY and FACET.
Part numbers include BECK/ARNLEY 2011684 and FACET 76084.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| FOUR SEASONS | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| UNITED MOTOR PRODUCTS | RLY93 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 1R1227 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | View on Amazon |
This table covers the relays that control the Blower Motor circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
5 Blower Motor Relay parts are listed for the 1991 Eagle Summit, from STANDARD MOTOR PRODUCTS, FOUR SEASONS, ROSTRA and 2 other brands. STANDARD MOTOR PRODUCTS RY51 carries the "Popular" badge.
This group includes STANDARD MOTOR PRODUCTS RY51, FOUR SEASONS 36100 and ROSTRA 600055 and the remaining parts above.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Popular | 180238552 | 🇺🇸 US 🇨🇦 CA | 4 PINwith Cruise Control | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular | SLS139T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| BWD/NIEHOFF | S6023 | 🇺🇸 US 🇨🇦 CA | with Cruise Control | View on Amazon |
| BWD/NIEHOFF | S6023P | 🇺🇸 US 🇨🇦 CA | with Cruise Control | View on Amazon |
| FAMOUS BRAND | SLA1072 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | SLS139 | 🇺🇸 US 🇨🇦 CA | with Cruise Control | View on Amazon |
| FACET | 71027 | 🇺🇸 US 🇨🇦 CA | Base Model or ES ModelExcept Cruise Control | View on Amazon |
| FACET | 71044 | 🇺🇸 US 🇨🇦 CA | Base Model or ES ModelCruise Control | View on Amazon |
| ROSTRA | 670577 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
| STANDARD MOTOR PRODUCTS | SLS140 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
| WELLS | 1S4991 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
11 Brake Light Switch parts are listed for the 1991 Eagle Summit, from STANDARD MOTOR PRODUCTS, FAMOUS BRAND, BWD/NIEHOFF and 3 other brands. FAMOUS BRAND 180238552 carries the "Popular" badge.
In the Economy grade, FAMOUS BRAND, BWD/NIEHOFF and STANDARD MOTOR PRODUCTS supply 5 parts: the catalog's value-priced group. A representative part number is FAMOUS BRAND 180238552.
The Standard Replacement section lists 6 options from STANDARD MOTOR PRODUCTS, FACET, ROSTRA and 1 other brand — built to original-equipment specification. STANDARD MOTOR PRODUCTS SLS139 is listed in this group.
HVAC Control Switch / Panel Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| UNITED MOTOR PRODUCTS | RLY93 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the relays that control the HVAC Control Switch / Panel circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
3 HVAC Control Switch / Panel Relay parts are listed for the 1991 Eagle Summit, from ROSTRA, STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
Listed part numbers: ROSTRA 600055, STANDARD MOTOR PRODUCTS RY51 and UNITED MOTOR PRODUCTS RLY93.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | US373 | 🇺🇸 US 🇨🇦 CA | with Housing | View on Amazon |
| WELLS | 1S8288 | 🇺🇸 US 🇨🇦 CA | Manual trans.Switch and Housing | View on Amazon |
This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
2 Ignition Starter Switch parts for the 1991 Eagle Summit come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS US373 and WELLS 1S8288.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2OPS0037 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| UNITED MOTOR PRODUCTS | OPS28 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | U8001 | 🇺🇸 US 🇨🇦 CA | GoldMaximum Pressure Reading: 9 PS | View on Amazon |
| WELLS Popular | 1S6556 | 🇺🇸 US 🇨🇦 CA | Connector Gender: Male | View on Amazon |
| BECK/ARNLEY | 2010445 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| FACET | 70035 | 🇺🇸 US 🇨🇦 CA | Base Model or ES Model1-Pin | View on Amazon |
| GPD | 1815275 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| HELLA | 007392001 | 🇺🇸 US 🇨🇦 CA | 1-Pin ConnectorBolted | View on Amazon |
| ROSTRA | 501229 | 🇺🇸 US 🇨🇦 CA | Fits Base Model or ES Modelor DL Modelwith Light | View on Amazon |
| STANDARD MOTOR PRODUCTS | PS160 | 🇺🇸 US 🇨🇦 CA | Terminal Type: Blade | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
10 Oil Pressure Sender / Switch parts are listed for the 1991 Eagle Summit, from HOLSTEIN, UNITED MOTOR PRODUCTS, ACDELCO and 7 other brands. ACDELCO U8001 carries the "Popular" badge.
Economy: 2 parts, from HOLSTEIN and UNITED MOTOR PRODUCTS. A representative part number is HOLSTEIN 2OPS0037.
The Standard Replacement section: 8 options from ACDELCO, WELLS, BECK/ARNLEY and 5 other brands. ACDELCO U8001 is listed in this group.
Power Window Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| WELLS | 1R1227 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | View on Amazon |
This table covers the relays that control the Power Window circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
3 Power Window Relay parts for the 1991 Eagle Summit come from 3 brands — ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include ROSTRA 600055, STANDARD MOTOR PRODUCTS RY51 and WELLS 1R1227.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| WELLS | 1R1227 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | View on Amazon |
This table covers the relays that control the Radiator Fan circuit. Typical signs include a click with no action, or a circuit that works only when you swap in a known-good relay. Swap with an identical relay in the fuse box before buying — it is the fastest test there is.
4 Radiator Fan Relay parts for the 1991 Eagle Summit come from 4 brands — FOUR SEASONS, ROSTRA, STANDARD MOTOR PRODUCTS and 1 other brand.
Listed part numbers: FOUR SEASONS 36100, ROSTRA 600055 and STANDARD MOTOR PRODUCTS RY51, plus the other parts above.
Radiator Fan Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 36560 | 🇺🇸 US 🇨🇦 CA | Temperature Switch | View on Amazon |
This table covers the Radiator Fan switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 1991 Eagle Summit — FOUR SEASONS 36560.
Buying Electrical Switch & Relay Parts for a 1991 Eagle Summit
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 1.5L L4 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Brake Light Switch and Oil Pressure Sender / Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 1991 Eagle Summit?
Our catalog currently lists 50 electrical switch & relay parts for the 1991 Eagle Summit across 13 subcategories and 15 brands, covering the 1.5L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 1991 Eagle Summit?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 1991 Eagle Summit was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 1991 Eagle Summit?
Every part on this page is matched to the 1.5L L4 engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1991 Eagle Summit
Electrical Switch & Relay Parts for Other Eagle Summit Years
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