How to install pigtail assembly - 1990 Mercury Grand Marquis

Its on the side of the block firewall side ... REMOVAL Numbers in text in parenthesis correspond to numbered components in image. Disconnect the wiring harness (1) from the Crankshaft Position (CKP) sensor pigtail. Securely attach a scrap piece of wire about 36 inches long to the CKP sensor pigtail. Later, this piece will be used as a pull wire to guide the new sensor pigtail back through the same routing. Raise and support the vehicle. Remove the oil filter and capture any lost engine oil in a container. Loosen the oil cooler lines at the engine block. Back out the fittings far enough in order to gain sufficient clearance for the sensor pigtail connector to pass between the oil cooler lines and the side of the engine block. Remove the fastening bolt for the CKP sensor (1). Remove the CKP sensor and the O-ring seal from the engine block. Remove the CKP sensor pigtail. Observe the routing of the pigtail. Gently pull the CKP sensor pigtail down through the routing path and out. Guide the pigtail connector along the top of the oil cooler lines around to the side of the engine block. Pass the connector between the lines and the block at the point of the widest gap. Stop when the pull wire is exposed at both ends of the routing path. Disconnect the sensor from the pull wire. INSTALLATION Securely attach the CKP sensor pigtail to the lower end of the pull wire. Pass the pigtail connector between the oil cooler lines and the engine block. Using the pull wire as a guide, pull the sensor pigtail along the top of the oil cooler lines and around to the rear of the engine. Use the pull wire to pull the pigtail into position. Disconnect the pull wire from the sensor pigtail. Connect the sensor pigtail to the harness connector. Thoroughly clean the mating surfaces of the CKP sensor and the engine block. Install the CKP sensor with a new O-ring seal into the engine block. Install the fastening bolt (1) for the CKP sensor. Check the harness for proper routing. Make sure that the wiring cannot come in contact with the exhaust manifold. Tighten the oil cooler lines at the engine block. Install the oil filter. Lower the vehicle. Recheck the engine oil level.

The most likely culprit is the circuit board in the tail light assembly. Doorman makes a replacement that fastens to the rear of the lens assembly. They usually are in the range of about $70 depending on the vehicle. Also check to see if the pigtail is burnt out on the plug. If so, you will need to find a donor pigtail to fix that as well.

REPLACING CRUISE CONTROL SWITCH

1. Disconnect and isolate negative battery cable from battery.

2. Remove airbag module (See AIRBAG REMOVAL below).

3. Remove speed control switch mounting screw and remove switch from steering wheel.

4. Reverse procedure to install.
AIRBAG REMOVAL
1. Disconnect and isolate negative battery cable from battery.

2. From the underside of the steering wheel, remove the two screws that secure the driver airbag to the steering wheel armature.
CAUTION: The horn switch and the clockspring pigtails connected to the back of the airbag module are fragile. Do not pull on these wires to disengage them. These must be handled carefully to prevent damage to the horn switch and/or the clockspring assembly.
3. Pull the driver airbag away from the steering wheel enough to access the three electrical connections on the back of the airbag housing.

4. Disconnect the steering wheel wire harness connector for the horn switch from the horn switch feed pigtail wire connector, which is located on the back of the driver airbag housing.

5. The clockspring driver airbag pigtail wire connectors are secured by integral latches to the airbag inflator connector receptacles, which are located on the back of the driver airbag housing. Depress the latches on each side of the connector insulator and pull the insulators straight out from the airbag inflator to disconnect them from the receptacles.

6. Remove the driver airbag from the steering wheel.

7. Reverse procedure to install.

Open the hood, reach behind the headlight assembly and carefully turn the lamp assembly counter-clockwise, then remove the pigtail. To install a new lamp, simply do the reverse procedure.

YOU MUST REMOVE POWER STEERING PUMP, AND BELT THE SENSOR IS UNDER THE PUMP IN THE BLOCK.

The easiest way to go about this would be to pull the electrical pigtail off of the pump itself and that will stop all pumping of the windshield fluid.Locate your windshield washer reservoir and look around the outside of it.There will be a conical looking pump with an electrical pigtail and a rubber hose connected to it.The hose is where the fluid is transferred, but the electrical pigtail is what you want to disconnect.There is a lock clip you have to release, then you can pull the pigtail off with ease.No more pumping!!!! I hope I could help!!! Get back to me with any more questions and thanks!! Rate me accordingly.

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1. Remove the air cleaner assembly if necessary for access to the sensor.
   
2. Disconnect the pigtail harness from the sensor.
   
3. Remove the nut holding the sensor wire clip to the fuel rail mounting stud.
   
4. Remove the sensor mounting hardware, then the sensor.
   
5. Remove the clip from the sensor wire harness.
   

To install:

1. Install the sensor flush against the opening.
   
2. Install and tighten the bolts or nuts, as applicable.
   
3. Install the electrical connector.
   
4. Install the clip on the sensor wire harness.
   
5. Install the clip over the fuel rail mounting stud. Install the clip mounting nut.
   

These 4 pictures are for the Automatic:








These are for a manual trans:

REMOVAL & INSTALLATION

All Except V-10 Engine

1. Remove the air cleaner assembly if necessary for access to the sensor.
2. Disconnect the pigtail harness from the sensor.
3. Remove the nut holding the sensor wire clip to the fuel rail mounting stud.
4. Remove the sensor mounting hardware, then the sensor.
5. Remove the clip from the sensor wire harness.

This is from www.autozone.com.

You need to remove the bottom of the dash. It will make it easier to install. After you loosen the bolt for the plug, pull on it and unplug all three plugs. The plug for the turn switch will slide of the ignition switch plug. If it won't slide, pry with a little screwdriver. I would assume you are replacing the turn switch? Or are you digging for something else?

You might find some videos useful on YouTube. I have put a link to one but you can check out the thumbnails on the right if that doesn't help
How To Install Replace Headlight and Bulb Ford Escape 01 07 1AAuto com