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
-
WVE®Alternator ConnectorMercury Grand Marquis 1978, Alternator Connector 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 functionality. Made...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$3.20 - $3.42 - Standard®Alternator ConnectorMercury Grand Marquis 1978, Alternator Connector by Standard®. Output Terminal: 3 Ring Terminals. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.35
- WVE®Voltage RegulatorMercury Grand Marquis 1978, Voltage Regulator by WVE®. For Mating Connector Use 1P1131. 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$16.64 - $17.11
- Standard®Handypack™ Voltage Regulator ConnectorMercury Grand Marquis 1978, Handypack™ Voltage Regulator Connector by Standard®. Black. 4 Terminal Female. With External Regulator. Standard is to be the leading independent supplier to the automotive aftermarket, providing the...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.99
- Standard®Tru-Tech™ Voltage RegulatorMercury Grand Marquis 1978, Tru-Tech™ Voltage Regulator by Standard®. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$17.19
- Standard®Voltage RegulatorMercury Grand Marquis 1978, Voltage Regulator by Standard®. Electronic. Electronic. Can Replace Mechanical Unit. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$38.36
- SKF®Alternator BearingMercury Grand Marquis 1978, Alternator Bearing by SKF®. If you’re looking for premium-quality replacement automotive parts to keep your vehicle performing reliably, you can’t go wrong with superior-grade SKF products. Made using the...Ideal solution to make your vehicle perform as it shouldMade from high-strength materials for exceptional durability$7.59 - $10.29
- WVE®Starter BrushMercury Grand Marquis 1978, Starter Brush 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 functionality. Made to...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$14.52
- WVE®Starter BushingMercury Grand Marquis 1978, Starter Bushing 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 functionality. Made to...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$1.72 - $2.64
- Standard®Blue Streak™ SolenoidMercury Grand Marquis 1978, Blue Streak™ Solenoid by Standard®. Terminal Gender: Male. Terminal Type: Stud. Terminal Quantity: 4. Connector Gender: Female. Standard is to be the leading independent supplier to the automotive...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$34.68
- Standard®Starter Brush SetMercury Grand Marquis with Motorcraft Starter 1978, Starter Brush Set by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.69
- Standard®Starter BushingMercury Grand Marquis with Motorcraft Starter 1978, Starter Bushing by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2.26 - $2.30
- Standard®Starter DriveMercury Grand Marquis with Motorcraft Starter 1978, Starter Drive by Standard®. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$22.45
- Standard®Tru-Tech™ Starter SolenoidMercury Grand Marquis 1978, Tru-Tech™ Starter Solenoid by Standard®. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical system repair, but...Standard T-Series solenoids feature copper windings for a strong magnetic field to ensure reliable operationHigh quality terminal studs eliminate stripping and provide full power delivery to ensure that T-Series starter solenoids perform like the original$19.06
- Pioneer Automotive®Modulator ValveMercury Grand Marquis 1978, Modulator Valve by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your vehicle...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$19.07 - $32.16
- Standard®Intermotor™ Fuel Pump Cut-Off SwitchMercury Grand Marquis With Electric Fuel Pump 1978, Intermotor™ Fuel Pump Cut-Off Switch by Standard®. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...Designed as a replacement for your worn-out fuel system partWill help optimize your vehicle’s performance and fuel efficiency$63.82
- WVE®Engine Coolant Temperature SenderMercury Grand Marquis 1978, Engine Coolant Temperature Sender by WVE®. Terminal Quantity: 1. Connector Shape: Round. Connector Quantity: 1. Terminal Type: Threaded. Overall Length: 1.71". Replace your worn-out or faulty component with...Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$7.92
- WVE®Engine Coolant Temperature Sensor ConnectorMercury Grand Marquis 1978, Engine Coolant Temperature Sensor Connector by WVE®. Terminal Quantity: 1. Terminal Type: Pin. 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$2.22
- WVE®Engine Cooling Fan ModuleMercury Grand Marquis 1978, Engine Cooling Fan Module 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 functionality....Excellent replacement for your worn-out factory partDesigned to keep your vehicle running reliably mile after mile$45.57
- Standard®Engine Coolant Temperature SenderMercury Grand Marquis 1978, Engine Coolant Temperature Sender by Standard®. With Gauge. Terminal Quantity: 1. Connector Shape: Round. Connector Gender: Male. Connector Quantity: 1. Terminal Type: Stud. Standard is to be the leading...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$18.17
- Standard®Tru-Tech™ Engine Coolant Temperature SenderMercury Grand Marquis 1978, Tru-Tech™ Engine Coolant Temperature Sender by Standard®. Terminal Quantity: 1. Connector Shape: Round. Connector Gender: Male. Connector Quantity: 1. Terminal Type: Stud. With Gauge. Standard is to be the...The terminal is manufactured with high grade materialsThe housing is fabricated using polyamide resins$8.58
- Standard®Tru-Tech™ Engine Coolant Temperature SwitchMercury Grand Marquis without Automatic Temperature Control 1978, Tru-Tech™ Engine Coolant Temperature Switch by Standard®. Terminal Quantity: 1. Connector Gender: Male. Terminal Type: Stud. Standard is to be the leading independent...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$15.37
- Dorman®HVAC Switch ConnectorMercury Grand Marquis 1978, HVAC Switch Connector by Dorman®. Location: To Blower Motor. Type: Blade Female Terminal. Wire Quantity: 5. Overall Length: 7". Improved wiring and highly durable insulation resist the corrosion, overheating...Save time and expense by replacing the part, not the entire harnessBulb simply plugs into socket for ease of installation$7.31
- WVE®HVAC Blower Motor ConnectorMercury Grand Marquis without Automatic Temperature Control 1978, HVAC Blower Motor Connector by WVE®. With 5 Lead Wires. 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$11.16
- Standard®Handypack™ HVAC Blower Motor ConnectorMercury Grand Marquis 1978, Handypack™ HVAC Blower Motor Connector by Standard®. Type: 5 Female Terminal. Finish: Gray. Standard is to be the leading independent supplier to the automotive aftermarket, providing the highest quality...The handypack™ program is the most complete wiring center with 17 assortments available. Featuring application and non-application electrical products, handypack™ has the products and tools needed to get your electrical job done right.Pigtail and Socket Assembly$8.14
- Four Seasons®HVAC Blower Switch ConnectorMercury Grand Marquis 1978, HVAC Blower Switch Connector by Four Seasons®. With Lever. Type: 5 Terminals. Products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile A/C experience,...OE style connectorsMolded plastic construction$13.36
- Standard®Door Jamb SwitchMercury Grand Marquis 1978, Door Jamb Switch by Standard®. With 7/8" Mounting Hole. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and...Each Door Jamb Switch is a direct-fit OE replacement that ensures ease of installationHigh-quality materials withstand extreme conditions$16.30 - $26.56
- Original Engine Management®Dimmer SwitchMercury Grand Marquis 1978, Dimmer Switch by Original Engine Management®. Looking to maintain the top condition of your electrical system? We are ready to help you! Just choose from our immense selection of premium replacement...Made to deliver trouble-free operation for years aheadManufactured with cutting-edge technology$5.80
- Dorman®OE Solutions™ Window Motor Gear KitMercury Grand Marquis 1978, OE Solutions™ Window Motor Gear Kit by Dorman®. Package Quantity: 1. Tooth Gear: 9. Gear Material: Metal. Splines: Spline Count: 45. This replacement power window motor gear matches the dimensions of the...Direct replacement for a proper fit every timeNew gears can help restore smooth window operation on older vehicles$15.07
- WVE®Oil Pressure Switch ConnectorMercury Grand Marquis 1978, Oil Pressure Switch Connector 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$45.61
Shop By Service Type
Popular Products
1978 Mercury Grand Marquis Electrical Reviews
1 review
Cycling Clutch Sensor
Supercool® - Cycling Pressure SwitchPosted by Jose Manuel (Katy, TX) / June 16, 20201992 Hyundai Sonata
Popular Searches