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:
  • Battery
  • Starter Relay
  • Ignition Switch
  • Alternator Indicator
  • Integral Alternator Regulator (IAR)
  • 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:
  • Four-Channel Amplifier
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Radio
  • Four-Channel Amplifier
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Vehicle Speed Sensor (VSS)
  • Stop Lamp Switch
  • Electronic Engine Control (EEC) Module
  • Speed Control Servo
  • Hazard Flasher
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • TFI Ignition Module
  • Starter Motor/Solenoid
  • Battery
  • Starter Relay
  • Ignition Switch
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Trailer Exterior Lamps Relay
  • LH/RH Front Side Marker Lamp
  • LH/RH Front Park Lamp
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • TFI Ignition Module
  • Ignition Switch
  • Electronic Engine Control Module
  • Ignition Coil
  • Spout Check Connector
  • 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
  • 1991 Mercury Grand Marquis  5.0 V8 GAS Wiring Diagram1991 Mercury Grand Marquis 5.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Trunk Lid Release Switch
  • Trunk Lid Release Solenoid
  • 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 2008 Mercury Grand Marquis Grille Assembly2008 Mercury Grand Marquis Grille Assembly, With emblem provision and vertical billet grille insert; A high quality, direct fit OE replacement grille assembly..

    Source: Auto Body Parts Store

    $85.78

    Click here to view more details about 2002 Mercury Grand Marquis Bumper Cover, Front2002 Mercury Grand Marquis Bumper Cover, Front.

    Source: Auto Body Parts Store

    $133.87

    Click here to view more details about 2011 Mercury Grand Marquis Headlight Passenger Side2011 Mercury Grand Marquis Headlight Passenger Side, Passenger Side Head Light Assembly, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $121.50

    Click here to view more details about 1985 Mercury Grand Marquis V8, 5 L, 302 CID Rebuilt Engine1985 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 details1986 Mercury Grand Marquis Used A/C Compressor, 5.0, AUTO, 4X4 integral AC, 8-302 (5.0L), Very Good.

    Source: Used Auto Parts Store

    $110.00

    Click here to view more details1987 Mercury Grand Marquis Used Wiper Motor Front, CROWN VICTORIA, Very Good.

    Source: Used Auto Parts Store

    $66.00
    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:
    GOT A WEBSITE?Make money with Automotix

    Make money with Automotix Partner Program.

    Learn more

    Auto Repair Quick Search
    Help me find