Auto Parts Search


      Over 40 million used auto parts online. Shop online for auto and truck parts and save up to 75%

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!
Help me findSearch
Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Mercury Grand Marquis car and truck repair procedures including Mercury engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your 1991 Mercury Grand Marquis automobile. Try the Automotix DIY solution today!
DIY REPAIR SAMPLES > CONTINUE EXPLORING >

WIRING DIAGRAMS FOR 1991 Mercury Grand Marquis AUTOMOBILES

OEM drawn wiring diagrams for most 1991 Mercury Grand Marquis cars and light trucks sold in the U.S.

1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

Components on diagram:
  • Electronic Engine Control (EEC) Module
  • A/C-Heater Control Assembly
  • WOT Cutout Relay
  • A/C Clutch Field Coil
  • Thermal Limiter
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Left Headlamp
  • Right Cornering Lamp
  • Left Hi Beam Headlamp
  • Right Hi Beam Headlamp
  • Left Cornering Lamp
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Alternator
  • Alternator Output Control Relay
  • Voltage Regulator
  • Integral Alternator Regulator
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Glove Box Lamp
  • Main Light Switch
  • Illuminated Entry Timer
  • Engine Compartment Lamp
  • LH/RH Instrument Panel Courtesy Lamp
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Cargo Lamp
  • Tailgate Switch
  • Map Dome Lamp
  • LH/RH Vanity Lamp
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • LCD Dimming Relay
  • Radio
  • Power Antenna Switch
  • Main Light Switch
  • Heated Windshield Switch
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Tailgate Lock Motor
  • LH/RH Front Door Lock Motor
  • LH/RH Front Door Lock Switch
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Trailer Battery Charging Relay
  • Trailer Exterior Lamps Relay
  • Trailer LH/RH Turn Relay
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Warning Chime Module
  • Seat Belt Switch
  • Instrument Cluster
  • Main Light Switch
  • Fasten Belts Indicator
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Police Power Relay
  • CLICK HERE TO GET FULL ACCESS TO 1991 Mercury Grand Marquis WIRING DIAGRAMS!

    Shop online for auto body parts, engines, wheels, lights...

    Click here to view more details about 1997 Mercury Grand Marquis Tail Light, Driver Side1997 Mercury Grand Marquis Tail Light, Driver Side, Bulbs not included; DOT and SAE approved; A high quality, OE replacement tail light; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $110.97

    Click here to view more details about 2009 Mercury Grand Marquis Antenna2009 Mercury Grand Marquis Antenna, 1-section mast; 470 mm extension; Stick-on; A high quality universal imitation antenna; May require modification or other adjustment to your vehicle upon installation..

    Source: Auto Body Parts Store

    $5.01

    Click here to view more details2002 Mercury Grand Marquis 16" Aftermarket Wheel Covers, Aftermarket Wheel Covers; 16 Inch; Lacy Spoke Chrome Finish; Metal Clip Retention, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $62.50

    Click here to view more details about 1983 Mercury Grand Marquis V8, 5 L, 302 CID Rebuilt Engine1983 Mercury Grand Marquis V8, 5 L, 302 CID Rebuilt Engine, Crank #2MAE or R1J, Smog not HO., Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,297.00

    Click here to view more details2007 Mercury Grand Marquis Used Rear View Mirror, manual dimming, Very Good.

    Source: Used Auto Parts Store

    $47.00

    Click here to view more details2008 Mercury Grand Marquis Used Bumper Bar, Front, 4DR, SIL, GS w/foam, Very Good.

    Source: Used Auto Parts Store

    $194.00
    More parts
    Help me findSearch
    Auto Repair Quick Search
    Help me find
    Search DIY repair manuals by VIN...
    Vehicle Identification Number is a unique serial number used by the automotive industry to identify individual motor vehicles

    Find out what info we have for your vehicle

    Get the Complete Technical Service Bulletins!
    Get the Complete Technical Service Bulletins!Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 1991 Mercury Grand Marquis vehicle.
    Access the Complete guide!
    Need To Fix Your Car or Truck?
    Save Money With Free Car Insurance Quote
    FREE car insurance quote
    Enter Zip Code:
    Auto Repair Quick Search
    Help me find