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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ACI®Window MotorMercury Grand Marquis 1978, Window Motor by ACI®. With Circuit Breaker. Meets or Exceeds OEM Specs. With Circuit Breaker. ACI power window motors are manufactured to meet or exceed OE performance. The quality, durability, and...Hardened steel gearExpertly crafted from the highest grade materials$49.90 - $80.47 - Motorcraft®StarterMercury Grand Marquis 1978, Starter by Motorcraft®. This superior product was elaborately designed and meticulously manufactured to stringent industry standards to have the most precise OE specifications. It fits and functions like the...Recommended for one- to three-year-old vehiclesDesigned to provide 50,000 cranks$70.45 - $132.29
- ACDelco®Professional™ Voltage RegulatorMercury Grand Marquis 1978, Professional™ Voltage Regulator by ACDelco®. Electronic. Position: External. 1 Piece. Can Replace Mechanical Unit. Get the proper voltage to your vehicle’s critical systems with ACDelco Professional...Delivers needed system voltage and provides the proper fit, form and function to let your vehicle run the way it was designedDesigned to deliver trouble-free, consistent performance$38.07
- Hayden®Cooling Fan Temperature SwitchMercury Grand Marquis 1978, Cooling Fan Temperature Switch by Hayden®. Hayden Automotive engineers, manufactures and supplies a wide range of products designed to keep your car, truck or performance vehicle running cool. From fan...Designed for single or dual fan applicationsBrass construction for accurate temperature sensing$18.50 - $37.30
- WVE®Door Jamb SwitchMercury Grand Marquis 1978, Door Jamb Switch by WVE®. Connector Type: 1 Male Round Connector. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and tested to ensure the ultimate...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$13.04 - $19.92
- WVE®Short Design Oil Pressure SwitchMercury Grand Marquis 1978, Short Design Oil Pressure Switch by WVE®. 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...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$6.79 - $36.62
- WVE®Starter RelayMercury Grand Marquis 5.8L / 6.6L 1978, Starter Relay by WVE®. Standard Duty. 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...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$12.96 - $17.21
- WAI Global®AlternatorMercury Grand Marquis 5.8L with Optional Alternator 1978, Alternator by WAI Global®. Current: 100 Amp. With 1 Groove Pulley. Rotation: Clockwise. Voltage: 12V. Is the performance of your vehicle affected by the power outage? It may be...Elaborately designed to provide just enough powerIdentical in specifications to the factory alternator$165.66
- WVE®Starter SolenoidMercury Grand Marquis 5.8L / 6.6L 1978, Starter Solenoid by WVE®. Voltage: 12V. 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...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$12.96 - $22.09
- ACDelco®Professional™ Fuel Pump Cut-Off SwitchMercury Grand Marquis With Electric Fuel Pump 1978, Professional™ Fuel Pump Cut-Off Switch by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part. Designed as a direct-fit replacement of your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$93.57
- WVE®Engine Coolant Temperature SensorMercury Grand Marquis 5.8L with California Emission 1978, Engine Coolant Temperature Sensor by WVE®. Terminal Quantity: 2. Connector Shape: Round. Terminal Type: Pin. Replace your worn-out or faulty component with this quality...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$12.63
- Motorcraft®HVAC Blower Control SwitchMercury Grand Marquis 1978, HVAC Blower Control Switch by Motorcraft®. Motorcraft is the way to restore the performance of your vehicle. Designed specifically for your vehicle, Motorcraft products meet stringent Ford Motor Company...Direct OEM replacement for proper fitRecommended by Ford Motor Company$25.22
- Standard®HVAC Blower Control SwitchMercury Grand Marquis with Dealer Installed A/C 1978, HVAC Blower Control Switch by Standard®. Type: 4 Blade Male Terminal. Number Of Switch Positions: 4. Standard is to be the leading independent supplier to the automotive aftermarket,...Standard switches are designed using copper alloy conductors to ensure superior electrical conductivity with low resistive lossesStandard parts are 100% tested to verify both mechanical and electrical switching performance$25.46
- Vision-OE®Remanufactured AlternatorMercury Grand Marquis 1978, Remanufactured Alternator by Vision-OE®. External Fan. Voltage Regulator: External. Looking for dependability? Vision-OE alternators meet or exceed OE standards because they’re remanufactured using...Developed with modern technology and innovationMeticulously Tested for the ultimate in quality$71.45 - $94.63
- ACDelco®Professional™ Starter BrushMercury Grand Marquis 1978, Professional™ Starter Brush by ACDelco®. This superior product was elaborately designed and meticulously manufactured to stringent industry standards to have the most precise OE specifications. It fits and...Designed in compliance with rigorous factory standardsHigh level of quality, ultimate reliability, and solid value$13.61
- Vision-OE®Remanufactured StarterMercury Grand Marquis with Ford Starter 1978, Remanufactured Starter by Vision-OE®. Type: Wound Field Direct Drive. Rotation: Clockwise. With 9-Tooth Pinion Gear. Voltage: 12V. Remanufactured starters meet or exceed OE standards because...Developed with modern technology and innovationMeticulously tested for the ultimate in quality$61.92 - $65.99
- Walker Products®Engine Coolant Temperature SenderMercury Grand Marquis 1978, Engine Coolant Temperature Sender by Walker Products®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...High quality at an affordable priceExpertly made from premium materials$12.92
- SKP®Window Motor GearMercury Grand Marquis 6.6L 1978, Window Motor Gear by SKP®. SKP Power Window Motor Gear is made of high quality materials to serve you for years to come. Designed with ultimate quality and durability in mind. Plus, these product are...High quality at an affordable priceExpertly made from premium materials$8.04
- Motorcraft®Oil Pressure SwitchMercury Grand Marquis 1978, Oil Pressure Switch by Motorcraft®. Motorcraft is the way to restore the performance of your vehicle. Designed specifically for your vehicle, Motorcraft products meet stringent Ford Motor Company standards...Made with precision and quality in mindDesigned to meet your specific needs$48.21
- WVE®Engine Coolant Temperature SwitchMercury Grand Marquis With Automatic Temperature Control 1978, Engine Coolant Temperature Switch by WVE®. Terminal Quantity: 2. Connector Shape: Round. Terminal Type: Threaded. Replace your worn-out or faulty component with this quality...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$18.55
- Standard®Engine Coolant Temperature SwitchMercury Grand Marquis without Automatic Temperature Control 1978, Engine Coolant Temperature Switch by Standard®. Terminal Quantity: 1. Connector Shape: Round. Connector Gender: Male. Connector Quantity: 1. Terminal Type: Stud. Standard...In production, all thermal switches are factory-calibrated to make electrical contact at the specified lower-temperature set pointStandard switches feature a robust design with high grade materials to meet the stringent demands of today's service professional$14.51
- Dorman®HVAC Clutch Coil ConnectorMercury Grand Marquis with Frigidaire A6 Compressor 1978, HVAC Clutch Coil Connector by Dorman®. Non-Weatherpack Style. Type: Blade Female Terminal. Wire Quantity: 2. Overall Length: 7". Non-Weatherpack Style. Dorman offers a...Direct replacement A/C Clutch Coil Connectors available (where applicable) to ensure a proper fitVehicle try-on testing has been conducted on this part to ensure a trouble-free performance$7.74
- WVE®HVAC Blower Control SwitchMercury Grand Marquis without Automatic Temperature Control 1978, HVAC Blower Control Switch by WVE®. With 4 Terminals. Replace your worn-out or faulty component with this quality replacement from WVE. This product is designed and...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$24.27
- Standard®HVAC Blower Motor ConnectorMercury Grand Marquis 1978, HVAC Blower Motor Connector by Standard®. Type: 5 Blade Female Terminal. Finish: Gray. Wire Quantity: 5. Harness Length: 4". With Butt Splices. Standard is to be the leading independent supplier to the...Offering hundreds of high-quality pigtails and sockets for nearly every electrical jobUtilizing high grade materials to ensure peak conductivity and perfect connections$11.69
- Four Seasons®A/C Compressor Wiring HarnessMercury Grand Marquis with A6 Compressor 1978, A/C Compressor Wiring Harness by Four Seasons®. With 2 Spade Rectangle Connector. Type: 2 Terminals. Products are engineered and tested to provide years of trouble free operation. Backed by...OE style connectorsMolded plastic construction$8.89
- Four Seasons®HVAC Harness ConnectorMercury Grand Marquis without Automatic Temperature Control 1978, HVAC Harness Connector by Four Seasons®. With Gauge. Terminal Quantity: 1. Type: 1 Terminal. Products are engineered and tested to provide years of trouble free...Molded plastic constructionOE style connectors$2.60
- Four Seasons®Harness Connector AdapterMercury Grand Marquis with A6 Compressor 1978, Harness Connector Adapter by Four Seasons®. Products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile A/C experience, fix it once and...Precision moldedOE style connectors$9.42 - $10.31
- Four Seasons®Lever Selector Blower SwitchMercury Grand Marquis 1978, Lever Selector Blower Switch by Four Seasons®. With Rectangle Connector Shape. Type: 4 Terminals. Products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of...Premium parts you can rely onDesigned to keep your A/C system in top shape$24.58 - $38.63
- Cardone Reman®Remanufactured Window Motor Gear KitMercury Grand Marquis 1978, Remanufactured Window Motor Gear Kit by Cardone Reman®. Tooth Gear: 9. Gear Material: Plastic. Splines: 45. Round Shape. With Grease Kit. Cardone Window Lift Gear Kits are backed by Cardone engineering,...100% Load Testing ensures guaranteed performance every time.Brushes are precisely designed to ensure armature and contacts are properly matched$43.12
- ACI®Window Motor Gear KitMercury Grand Marquis 1978, Window Motor Gear Kit by ACI®. Meets or Exceeds OEM Specs.Designed as an authentic quality restorationMade according to OE specs$20.27 - $20.47
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1978 Mercury Grand Marquis Electrical Reviews
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Supercool® - Cycling Pressure SwitchPosted by Jose Manuel (Katy, TX) / June 16, 20201992 Hyundai Sonata
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