1978 Mercury Grand Marquis Electrical Parts
- Light Switches
- Light Relays + Sensors
- Fuses
- Wiring & Cables
- Replacement Gauges
- Cruise Control
- Horns
- Door Lock Actuators + Switches
- Window Motors + Switches
- Alternators
- Starters
- Batteries
- Voltage Regulators
- A/C Relays, Sensors
- Fuel Sensors & Switches
- Cooling System Switches, Sensors & Relays
- Engine Sensors, Relays, Switches & Connectors
- Solenoids, Sensors, Switches, Control Units
- Relays, Cables & Connectors
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WVE®Hazard Warning Flasher ConnectorMercury Grand Marquis 1978, Hazard Warning Flasher Connector by WVE®. With 3 Terminals. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$2.55 - WVE®High Beam Headlight SocketMercury Grand Marquis 1978, Headlight Socket by WVE®. High Beam. With 2 Terminals. With 2 Terminals. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$10.02
- Standard®Brake Light Switch ConnectorMercury Grand Marquis Without Hydro-Boost Brakes 1978, Brake Light Switch Connector by Standard®. 2nd Design. Harness Length: 7". Wire Quantity: 2. Standard is to be the leading independent supplier to the automotive aftermarket,...Offering hundreds of high-quality pigtails and sockets for nearly every electrical jobUtilizing high grade materials to ensure peak conductivity and perfect connections$15.74
- Standard®Flasher ConnectorMercury Grand Marquis 1978, Flasher Connector by Standard®. Finish: Red. Harness Length: 18". Wire Quantity: 2. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Offering hundreds of high-quality pigtails and sockets for nearly every electrical jobUtilizing high grade materials to ensure peak conductivity and perfect connections$22.21
- Standard®Handypack™ Back Up Light SocketMercury Grand Marquis 1978, Handypack™ Back Up Light Socket by Standard®. With 2 Wires. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and...The handypack™ program is the most complete wiring center. Featuring application and non-application electrical products, handypack™ has the products and tools needed to get your electrical job done rightPigtail and Socket Assembly$8.03
- Standard®Handypack™ Brake Light Switch ConnectorMercury Grand Marquis Without Hydro-Boost Brakes 1978, Handypack™ Brake Light Switch Connector by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Premium parts you can rely onDesigned to restore functionality$9.71
- Standard®Handypack™ Dimmer Switch ConnectorMercury Grand Marquis 1978, Handypack™ Dimmer Switch Connector by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...Premium parts you can rely onDesigned to restore functionality$3.37
- Standard®Hazard Warning RelayMercury Grand Marquis 1978, Hazard Warning Relay by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest reputation for...Premium parts you can rely onDesigned to restore functionality$15.91
- Standard®Headlight Dimmer Switch ConnectorMercury Grand Marquis 1978, Headlight Dimmer Switch Connector by Standard®. Finish: Black. Harness Length: 13 1/2". Wire Quantity: 3. Standard is to be the leading independent supplier to the automotive aftermarket, providing the...Offering hundreds of high-quality pigtails and sockets for nearly every electrical jobUtilizing high grade materials to ensure peak conductivity and perfect connections$5.21
- United Motor Products®Headlight Dimmer Switch ConnectorMercury Grand Marquis 1978, Headlight Dimmer Switch Connector by United Motor Products®. Without Locking Tabs. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from our immense...Designed to help restore the performance of your electrical systemMade from high-grade materials using the latest techniques$4.17
- Diode Dynamics®Inline ResistorMercury Grand Marquis 1978, Inline Resistor by Diode Dynamics®. Quantity: 2 Pieces. This is a pair of inline resistors, designed for use with 194, 168, or 921 size bulb applications. Each resistor draws 5 watts of power, the same as a...Designed to help restore the performance of your electrical systemMade from high-grade materials using the latest techniques$10.00
- WVE®HornMercury Grand Marquis 1978, Horn by WVE®. Low Note. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate in durability and functionality. Made to...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$23.47
- Standard®Intermotor™ Replacement HornMercury Grand Marquis 1978, Intermotor™ Replacement Horn by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...High quality at an affordable priceExpertly made from premium materials$27.20 - $27.34
- Standard®Tru-Tech™ Replacement HornMercury Grand Marquis 1978, Tru-Tech™ Replacement Horn by Standard®. High Tone. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...High quality at an affordable priceExpertly made from premium materials$33.87
- ACDelco®Professional™ Instrument Panel Lamp SocketMercury Grand Marquis With AC High Blower 1978, Professional™ Instrument Panel Lamp Socket by ACDelco®. Twist-In Type. Finish: Black. 1/2" Hole. With Bracket. 66 Amp Max. Looking to maintain the top condition of your electrical...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.69
- WVE®Instrument Panel Light SocketMercury Grand Marquis 1978, Instrument Panel Light Socket by WVE®. 1/2". For Bulb 194. Twist-in Type. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$2.06
- Standard®Handypack™ Instrument Panel Lamp SocketMercury Grand Marquis With A/C High Blower 1978, Handypack™ Instrument Panel Lamp Socket by Standard®. Twist-In. Finish: Black. 1/2" Hole. Turn Signal Indicator. Standard is to be the leading independent supplier to the automotive...Premium parts you can rely onDesigned to restore functionality$2.53
- Standard®Instrument Panel Lamp SocketMercury Grand Marquis With AC High Blower 1978, Instrument Panel Lamp Socket by Standard®. Twist-In Type. Finish: Black. 1/2" Hole. With Bracket. 66 Amp Max. Standard is to be the leading independent supplier to the automotive...High quality at an affordable priceExpertly made from premium materials$2.61
- Standard®Electrical ConnectorMercury Grand Marquis 1978, Electrical Connector by Standard®. For over 100 years, professional technicians have trusted Standard® to replace the failed OE part. Standard® manufacturers the highest-quality, best-performing parts for...Protective Tubing IncludedEach part has high-quality direct replacement electrical connector that eliminates the need for a harness, replacing only the damaged connector, for a cost effective repair solution$70.58
- Remy®AlternatorMercury Grand Marquis 1978, Alternator by Remy®. Voltage Regulator: External. The alternators by Remy provide significant fuel efficiency and the lowest noise available on the market today. They feature patented winding technology which...Boasts the lowest mass in the industryProvides maximum fuel economy$59.98 - $127.59
- ACDelco®Gold™ Remanufactured AlternatorMercury Grand Marquis 1978, Gold™ Remanufactured Alternator by ACDelco®. With 1V Pulley. Pulley Size: 71 mm. External Fan. Voltage Regulator: External. Rotation: Clockwise. Designed utilizing the latest technology, this product...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$43.16 - $88.70
- Quality-Built®AlternatorMercury Grand Marquis with Ford Alternator 1978, Alternator by Quality-Built®. With Single V Type Pulley. External Fan. Voltage Regulator: External. Rotation: Clockwise. Voltage: 12V. Get professional installer quality at a DIY price...Designed specifically for the high demands of professional installersSelect components and advanced manufacturing techniques provide unparalleled performance and reliability$56.73 - $78.65
- Cardone New®Rear Window MotorMercury Grand Marquis 2 Doors 1978, Rear Window Motor by Cardone New®. Connector Quantity: 2. Number of Mouting Holes: 3. Terminal Quantity: 2. Tooth Gear: 9. Without Regulator. Mounting Type: Self-Tapping. Round Shape. With Instruction...Designed with the latest software and manufactured with modern toolingManufactured from the highest quality materials$49.43 - $50.66
- ACDelco®Gold™ StarterMercury Grand Marquis 1978, Gold™ Starter by ACDelco®. Rotation: Clockwise. With 9-Tooth Pinion Gear. Voltage: 12V. Designed utilizing the latest technology, this product features premium quality and will perform better than...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$36.78 - $75.62
- Four Seasons®Radiator Fan ControllerMercury Grand Marquis 1978, Radiator Fan Controller by Four Seasons®. Connector Shape: Rectangle. Connector Gender: Male. Voltage: 12 V. Radiator Mounted. Activated by radiator temp and/or A/C Clutch. Adjustable (140° - 220 °F) with...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$39.25
- BBB Industries®Premium™ StarterMercury Grand Marquis with Ford Starter 1978, Premium™ Starter by BBB Industries®. Type: Wound Field Direct Drive. Rotation: Clockwise. With 9-Tooth Pinion Gear. Voltage: 12V. If your engine starts hard or fails to start, the problem...Developed with modern technology and innovationMeticulously tested for the ultimate in quality$74.99 - $140.15
- BBB Industries®StarterMercury Grand Marquis with Ford Starter 1978, Starter by BBB Industries®. Type: Wound Field Direct Drive. Rated Power: 1.2 kW. Rotation: Clockwise. With 9-Tooth Pinion Gear. Voltage: 12V. If your engine starts hard or fails to start,...Developed with modern technology and innovationMeticulously tested for the ultimate in quality$160.10
- Four Seasons®A/C Clutch Cycle SwitchMercury Grand Marquis with Dealer Installed A/C 1978, A/C Clutch Cycle Switch by Four Seasons®. Front. With 34" Capillary Tube. Products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of...Contains gaskets, o-rings, or seals to properly replace the productPrecision engineered$31.86
- Remy®StarterMercury Grand Marquis 1978, Starter by Remy®. Rated Power: 1.1 kW. Rotation: Clockwise. With 9-Tooth Pinion Gear. Voltage: 12V. If your engine starts hard or fails to start, the problem can be in the starter. And to replace your...Will help you easily solve the problem with engine startingDesigned to duplicate the original part as closely as possible$56.74 - $96.76
- BBB Industries®Premium™ Remanufactured AlternatorMercury Grand Marquis 5.8L with Alternator Plug 1978, Premium™ Remanufactured Alternator by BBB Industries®. Current: 90 Amp. With 1-V Groove Pulley. External Fan. Plug Position: 9:00 O'Clock. Voltage Regulator: External. Designed...Developed with modern technology and innovationMeticulously Tested for the ultimate in quality$85.29
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1978 Mercury Grand Marquis Electrical Reviews
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Cycling Clutch Sensor
Supercool® - Cycling Pressure SwitchPosted by Jose Manuel (Katy, TX) / June 16, 20201992 Hyundai Sonata
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