What is the general information about relays on Mercury Grand Marquis?

In the fuel injection system of the vehicle and horns, the starter, the fog lamps, and many other electrical appliances in the car, relays are used to transference electrical stimuli to the appliance. Relays control a low current control circuit to switch on or off a high current power circuit, and therefore an unreliable relay will cause the relevant component not to work as required. Main and additional relays are located in the engine compartment, together with other electrical equipment; the underhood power center is situated near the battery and includes relays and high amperage fuses. Some cars of the late model use a relay box near the brake master cylinder along with relays for air conditioner WOT cutout, fuel pump, PCM power, and PCM power diode. In a case of suspected faulty relay it can be unbolted and checked, there is onboard procedure or check by the local service provider. In case of relays with short or open circuits, these must be replaced as a complete assembly. For proper hook-ups while testing a relay, one needs to look at wiring diagrams; where these are not available, a set of details noted follows in the information list. Typically relays come in type with two terminals for the control circuit which is connected to the relay coil, and the rest of the terminals for the power circuit which closes internally when the coil is energized. They are normally labelled so that control and power circuits can easily be distinguished from one another. To test, click the relay and ground the terminal on the other side of the circuit in the case there will be no continuity between terminal 30 and 87. Then add a fused jumper wire from one of the control circuit terminals to the positive battery terminal and another wire from the second control circuit terminal to ground; the relay should click. If it does not, try flipping the jumper wires. When the jumper wires are connecting, you should ground continuity between the power circuit terminals, and the continuity reading should be now between 30 and 87 terminals. If the relay does not pass any of these tests it is recommended that it should be replaced.

Genuine Mercury Grand Marquis Relay

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29 Relays found

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Mercury Grand Marquis Relay
Part Number: FOAZ-14N089-A
$16.62 MSRP: $25.00
You Save: $8.38 (34%)
ADD TO CART
Product Specifications
- Replaced by: 5M5Z-14N089-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-2011 Mercury Grand Marquis | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.0L | 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE, 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Starter Motor Relay Assy
Part Number: E9TZ-11450-B
$24.97 MSRP: $39.82
You Save: $14.85 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Relay Assy - Starter Motor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1985-1991 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
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Mercury Grand Marquis Relay
Part Number: F8OZ-14N089-AA
$24.10 MSRP: $34.33
You Save: $10.23 (30%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2011 Mercury Grand Marquis | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI | 4AT 4R70W, 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Direction Indicator Relay
Part Number: 5C3Z-13350-AA
$26.11 MSRP: $41.64
You Save: $15.53 (38%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Relay - Direction Indicator
- Replaces: F65Z-13350-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Relay
Part Number: 6W1Z-8B658-AC
$144.10 MSRP: $238.18
You Save: $94.08 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Fan Relay
- Replaces: 6W1Z-8B658-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Direction Indicator Relay
Part Number: 5L5Z-13350-AA
$30.21 MSRP: $48.18
You Save: $17.97 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Relay - Direction Indicator; Flasher, Flasher Relay, Relay, Turn Signal Flasher
- Replaces: F67Z-13350-AA, F67Z-13350-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Relay
Part Number: 9L2Z-14N089-A
$19.95 MSRP: $29.17
You Save: $9.22 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 5M5Z-14N089-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Relay
Part Number: FOAZ-14N089-B
$54.63 MSRP: $99.50
You Save: $44.87 (46%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: AU5Z-14N089-FA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-2011 Mercury Grand Marquis | 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.0L | 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE, 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Grand Marquis Relay
Part Number: F5TZ-14N089-B
$9.57 MSRP: $13.63
You Save: $4.06 (30%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Horn Relay, Sentinel Relay, Wiper Relay
- Replaced by: 5M5Z-14N089-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Grand Marquis Relay
Part Number: 5C3Z-14N089-A
$16.38 MSRP: $23.33
You Save: $6.95 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaced by: 5M5Z-14N089-CA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Grand Marquis Relay
Part Number: F8PZ-14N135-CA
$11.53 MSRP: $15.75
You Save: $4.22 (27%)
ADD TO CART
Product Specifications
- Other Name: Dimmer Relay
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1986-1989 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
- 1983 Mercury Grand Marquis | 8 Cyl 5.8L | 4AT AOD
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Mercury Grand Marquis Relay
Part Number: F8PZ-14N135-DA
$39.77 MSRP: $54.34
You Save: $14.57 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Dimmer Relay, Fuel Pump Relay
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1986-1989 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
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Mercury Grand Marquis Relay
Part Number: F8PZ-14N135-AA
$13.73 MSRP: $18.75
You Save: $5.02 (27%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-1987 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
- 1981 Mercury Grand Marquis | 8 Cyl 4.2L, 8 Cyl 5.0L, 8 Cyl 5.8L | 3AT, 4AT AOD
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Mercury Grand Marquis Relay
Part Number: D2SZ-14677-B
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-1989 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
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Mercury Grand Marquis Relay
Part Number: F8AZ-13C718-AA
$0.00
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1993-2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AODE
- 1980-1991 Mercury Grand Marquis | 8 Cyl 4.2L, 8 Cyl 5.0L, 8 Cyl 5.8L | 3AT, 3AT C4, 3AT C6, 4AT AOD
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Mercury Grand Marquis Relay
Part Number: F8PZ-14N135-BA
$0.00
Product Specifications
- Other Name: ECM Relay, Power Relay
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1986-1989 Mercury Grand Marquis | 8 Cyl 5.0L | 4AT AOD
- 1981 Mercury Grand Marquis | 8 Cyl 4.2L, 8 Cyl 5.0L, 8 Cyl 5.8L | 3AT, 4AT AOD
View related parts
Mercury Grand Marquis Relay
Part Number: D7AZ-13C718-A
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1993-2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AODE
- 1990-1991 Mercury Grand Marquis | 8 Cyl 5.0L | 4AT AOD
View related parts
Mercury Grand Marquis Relay
Part Number: E3AZ-12A646-A
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1991 Mercury Grand Marquis | 8 Cyl 5.0L | 4AT AOD
View related parts
Mercury Grand Marquis Relay
Part Number: E3AZ-13A025-A
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1988-1989 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
- 1984-1985 Mercury Grand Marquis | 8 Cyl 5.8L | 4AT AOD
View related parts
Mercury Grand Marquis Relay
Part Number: E3AZ-13A025-B
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-1987 Mercury Grand Marquis | 8 Cyl 5.8L | 4AT AOD

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1-20 of 29 Results

Mercury Grand Marquis Relay

We provide a wide range of Mercury Grand Marquis Relay at the best prices possible. If you need Mercury Grand Marquis Relay, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Mercury Grand Marquis Relay Parts Questions & Experts Answers

Relay
E3AZ-13A025-A
Q: What is the general information about relays on Mercury Grand Marquis?
A: In the fuel injection system of the vehicle and horns, the starter, the fog lamps, and many other electrical appliances in the car, relays are used to transference electrical stimuli to the appliance. Relays control a low current control circuit to switch on or off a high current power circuit, and therefore an unreliable relay will cause the relevant component not to work as required. Main and additional relays are located in the engine compartment, together with other electrical equipment; the underhood power center is situated near the battery and includes relays and high amperage fuses. Some cars of the late model use a relay box near the brake master cylinder along with relays for air conditioner WOT cutout, fuel pump, PCM power, and PCM power diode. In a case of suspected faulty relay it can be unbolted and checked, there is onboard procedure or check by the local service provider. In case of relays with short or open circuits, these must be replaced as a complete assembly. For proper hook-ups while testing a relay, one needs to look at wiring diagrams; where these are not available, a set of details noted follows in the information list. Typically relays come in type with two terminals for the control circuit which is connected to the relay coil, and the rest of the terminals for the power circuit which closes internally when the coil is energized. They are normally labelled so that control and power circuits can easily be distinguished from one another. To test, click the relay and ground the terminal on the other side of the circuit in the case there will be no continuity between terminal 30 and 87. Then add a fused jumper wire from one of the control circuit terminals to the positive battery terminal and another wire from the second control circuit terminal to ground; the relay should click. If it does not, try flipping the jumper wires. When the jumper wires are connecting, you should ground continuity between the power circuit terminals, and the continuity reading should be now between 30 and 87 terminals. If the relay does not pass any of these tests it is recommended that it should be replaced.