The 1990 Eagle Summit has 52 electrical switch & relay parts with verified fitment on this page — 13 part types and 15 brands, covering both the 1.5L L4 and the 1.6L L4. Each part includes a manufacturer part number and application notes.
On the 1990 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 52 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 26 parts.
The 1990 Eagle Summit was sold with both the 1.5L L4 and the 1.6L L4. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1990 Eagle Summit electrical switch & relay parts are STANDARD MOTOR PRODUCTS (11 parts), WELLS (8 parts) and ROSTRA (7 parts), plus 12 more brands. Quality grades include Standard Replacement and Economy.
8 parts on this 1990 Eagle Summit page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS RY51 (A/C Compressor Relay) and STANDARD MOTOR PRODUCTS RY51 (Blower Motor Relay). Click any part number to see every vehicle that part fits.
A/C Compressor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 1.5L L4 | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| DORMAN Fits: 1.5L L4 | 85170 | 🇺🇸 US 🇨🇦 CA | 5-Wire Bosch Style Relay | View on Amazon |
| FOUR SEASONS Fits: 1.5L L4 | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA Fits: 1.5L L4 | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| WELLS Fits: 1.5L L4 | 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 for the 1990 Eagle Summit come from 5 brands — STANDARD MOTOR PRODUCTS, DORMAN, FOUR SEASONS and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS RY51.
Part numbers include STANDARD MOTOR PRODUCTS RY51, DORMAN 85170 and FOUR SEASONS 36100, among others listed above.
A/C Condenser Fan Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: 1.5L L4 | 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.
This group shows a single part: FOUR SEASONS 36100.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 1.5L L4 | 1711254 | 🇺🇸 US 🇨🇦 CA | A/C compressor Low Press Cut-Out Switchwith 2 Prongs | View on Amazon |
| UAC Fits: 1.5L L4 | 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 for the 1990 Eagle Summit come from 2 brands — GPD and UAC.
This group includes GPD 1711254 and UAC SW5203C.
A/C System Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC Fits: 1.5L L4 | 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.
This group shows a single part: UAC RE4476C.
Back Up / Reverse Lamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: 1.5L L4 | 2011684 | 🇺🇸 US 🇨🇦 CA | Manual trans. | View on Amazon |
| FACET Fits: 1.5L L4 | 76084 | 🇺🇸 US 🇨🇦 CA | Manual trans.DL Model or LX 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 for the 1990 Eagle Summit come from 2 brands — BECK/ARNLEY and FACET.
Listed part numbers: BECK/ARNLEY 2011684 and FACET 76084.
Blower Motor Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 1.5L L4 | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| FOUR SEASONS Fits: 1.5L L4 | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA Fits: 1.5L L4 | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 1.5L L4 | RLY93 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 1.5L L4 | 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 for the 1990 Eagle Summit come from 5 brands — STANDARD MOTOR PRODUCTS, FOUR SEASONS, ROSTRA and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS RY51.
Part numbers include STANDARD MOTOR PRODUCTS RY51, FOUR SEASONS 36100 and ROSTRA 600055, among others listed above.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Popular Fits: 1.5L L4 | 180238552 | 🇺🇸 US 🇨🇦 CA | 4 PINwith Cruise Control | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 1.5L L4 | SLS139T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| BWD/NIEHOFF Fits: 1.5L L4 | S6023 | 🇺🇸 US 🇨🇦 CA | with Cruise Control | View on Amazon |
| BWD/NIEHOFF Fits: 1.5L L4 | S6023P | 🇺🇸 US 🇨🇦 CA | with Cruise Control | View on Amazon |
| FAMOUS BRAND Fits: 1.5L L4 | SLA1072 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 1.5L L4 | SLS139 | 🇺🇸 US 🇨🇦 CA | with Cruise Control | View on Amazon |
| FACET Fits: 1.5L L4 | 71027 | 🇺🇸 US 🇨🇦 CA | Except Cruise Controlwith Lead | View on Amazon |
| FACET Fits: 1.5L L4 | 71044 | 🇺🇸 US 🇨🇦 CA | Cruise Control4-Pin | View on Amazon |
| ROSTRA Fits: 1.5L L4 | 670577 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | SLS140 | 🇺🇸 US 🇨🇦 CA | without Cruise Control | View on Amazon |
| WELLS Fits: 1.5L L4 | 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 for the 1990 Eagle Summit come from 6 brands — STANDARD MOTOR PRODUCTS, FAMOUS BRAND, BWD/NIEHOFF and 3 other brands. The "Popular" part is FAMOUS BRAND 180238552.
The Economy section lists 5 options from FAMOUS BRAND, BWD/NIEHOFF and STANDARD MOTOR PRODUCTS — the catalog's value-priced group. FAMOUS BRAND 180238552 is listed in this group.
In the Standard Replacement grade, STANDARD MOTOR PRODUCTS, FACET, ROSTRA and 1 other brand supply 6 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS SLS139.
HVAC Control Switch / Panel Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 1.5L L4 | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| FOUR SEASONS Fits: 1.5L L4 | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA Fits: 1.5L L4 | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 1.5L L4 | RLY93 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 1.5L L4 | 1R1227 | 🇺🇸 US 🇨🇦 CA | Cover Material: Plastic, Metal | 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.
5 HVAC Control Switch / Panel Relay parts for the 1990 Eagle Summit come from 5 brands — STANDARD MOTOR PRODUCTS, FOUR SEASONS, ROSTRA and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS RY51.
Listed part numbers: STANDARD MOTOR PRODUCTS RY51, FOUR SEASONS 36100 and ROSTRA 600055, plus the other parts above.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | US373 | 🇺🇸 US 🇨🇦 CA | with Housing | View on Amazon |
| WELLS Fits: 1.5L L4 | 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 are listed for the 1990 Eagle Summit, from STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: STANDARD MOTOR PRODUCTS US373 and WELLS 1S8288.
Oil Pressure Sender / Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 1.5L L4 | 2OPS0037 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 1.5L L4 | OPS28 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 1.5L L4 | U8001 | 🇺🇸 US 🇨🇦 CA | GoldMaximum Pressure Reading: 9 PS | View on Amazon |
| WELLS Popular Fits: 1.5L L4 | 1S6556 | 🇺🇸 US 🇨🇦 CA | Connector Gender: Male | View on Amazon |
| BECK/ARNLEY Fits: 1.5L L4 | 2010445 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| FACET Fits: 1.5L L4 | 70035 | 🇺🇸 US 🇨🇦 CA | 1-PinBAR / PSI: .2 / 2.9 | View on Amazon |
| GPD Fits: 1.5L L4 | 1815275 | 🇺🇸 US 🇨🇦 CA | with Light | View on Amazon |
| HELLA Fits: 1.5L L4 | 007392001 | 🇺🇸 US 🇨🇦 CA | 1-Pin ConnectorBolted | View on Amazon |
| ROSTRA Fits: 1.5L L4 | 501229 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | 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 for the 1990 Eagle Summit come from 10 brands — HOLSTEIN, UNITED MOTOR PRODUCTS, ACDELCO and 7 other brands. The "Popular" part is ACDELCO U8001.
The Economy section: 2 options from HOLSTEIN and UNITED MOTOR PRODUCTS. HOLSTEIN 2OPS0037 is listed in this group.
Standard Replacement: 8 parts, from ACDELCO, WELLS, BECK/ARNLEY and 5 other brands. A representative part number is ACDELCO U8001.
Power Window Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 1.5L L4 | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| WELLS Fits: 1.5L L4 | 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 are listed for the 1990 Eagle Summit, from ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
This group includes ROSTRA 600055, STANDARD MOTOR PRODUCTS RY51 and WELLS 1R1227.
Radiator Fan Relay
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: 1.5L L4 | 36100 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| ROSTRA Fits: 1.5L L4 | 600055 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RoundVoltage: 12 Volts (Direct Current) | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | RY51 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Round | View on Amazon |
| WELLS Fits: 1.5L L4 | 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 are listed for the 1990 Eagle Summit, from 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 |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.5L L4 | TS206 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS TS206.
Buying Electrical Switch & Relay Parts for a 1990 Eagle Summit
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Match the engine first. Every electrical switch & relay part here is engine-specific; each row shows which engine(s) it fits.
- 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 1990 Eagle Summit?
Our catalog currently lists 52 electrical switch & relay parts for the 1990 Eagle Summit across 13 subcategories and 15 brands, covering both the 1.5L L4 and the 1.6L L4. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 1990 Eagle Summit engines?
Yes. Every electrical switch & relay part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical switch & relay problems on a 1990 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 1990 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 1990 Eagle Summit?
First match the engine — each row shows which engine(s) the part fits. 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 1990 Eagle Summit
Electrical Switch & Relay Parts for Other Eagle Summit Years
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