Select Your Vehicle

View Cart

Trailer Wiring Harness Installation - 2003 Ford Focus

content loading

2003 Ford Focus Custom Fit Vehicle Wiring

Products Featured in this Video

How to Install a Trailer Wiring Harness on a 2003 Ford Focus

Today on our 2003 Ford Focus Wagon well be installing Draw-Tite wiring harness part #: 18252. Now to begin well simply open the rear cargo door and remove the two taillight assemblies. To do this well unscrew the two Phillips head screws and push the taillight assembly out towards the side. We can then unplug the lights and set them off to the side to keep from damaging them. Well use a piece of airline as a fish tape where well fish it down through the taillight hole behind the bumper and down through the bottom. With that done well go ahead and take our four pole harness and well peel the green wire off of the harness so that it can be routed over to the right taillight.

With the green wire removed we can then attach the white wire, the brown wire and the yellow wire to the air tube and draw it back up. With that done well need to locate the wires for the proper signals with somebody in the front will have them turn the left turn signal on and using the probe included with the kit well locate our left turn signal and youll see here it is, the blue wire on our factory harness. We can then locate our taillight signal on our factory harness which is the orange wire here. Now, for our right turn signal it is the blue wire with the red tracer. Were now ready to make our connections.

Well now take our quick connectors also included with the kit, well place one of the connectors over the blue wire which is our turn signal brake signal and well take the yellow wire from our four pole harness and place it into the connector where we can then clamp it down using a pair of pliers. Well then close the lid and go ahead and tape it up with some electrical tape. Well now go ahead and make the connection for the taillights using the same procedure as we did with our left turn signal. And again, well go ahead and tape them up with electrical tape. Well now need to make our ground.

Well use the white wire and strip the insulation back, well attach and ringed eyelet. Well go ahead and make our ground connection here on the body of the vehicle right behind the taillight housing. With that all done well go ahead and reinstall our left taillight assembly. Now were underneath the vehicle and well need to rout our harness towards the passenger side. You want to make sure you stay away from any hot components such as your exhaust or moving components such as your suspension while routing it over.

Now, when weve reached the middle of the vehicle well go ahead and leave our four pole harness hanging there and continue with the green wire over to the passenger side. Now here on the passenger side well use the quick connector to make our connection here at the blue wire with the red tracer. And with that connection made we can go ahead and reinstall our right taillight assembly. Now well go ahead and secure our harness up to the vehicle to ensure it doesnt hang down. And with that our installation is complete and thatll do it for part #: 18252 from Draw-Tite on our 2003 Ford Focus Wagon.

Info for this part was:

Test Fit:
Joe V

Video Edited:
Zack K

Video Edited:
Andrew K

Video Edited:
Joshua S

Test Fit:
Nicholas E

Video by:
Jacob T

Test Fit:
Rick A

Video Edited:
Mike H

Test Fit:
Shane T

Video by:
Alan C

Video Edited:
Sue W

Video Edited:
Chad S

Video Edited:
Chris R

Test Fit:
Jared G

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Ford Focus Custom Fit Vehicle Wiring Videos

Trailer Wiring Harness Installation - 2014 Ford Focus

Today on our 2014 Ford Focus Five Door we're going to be installing the Tow Ready T1 Vehicle Wiring Harness, part number 118549. We're going to begin by raising the rear hatch of the vehicle. Now that we have our rear hatch open go ahead and set this trunk cover aside for now. Go ahead and set the spare tire out as well. The reason why I took all that out is to gain access to this grommet that we'll be using in a little bit. Now that we have the trunk area cleared out next we're going to need to remove this panel right here to gain access to the nuts that are behind the taillight assembly. Simply push in and pull outward and set it aside. Now with our panel removed let's go ahead and point out the two plastic nuts that we'll need to remove.

Trailer Wiring Harness Installation - 2008 Ford Focus

Today on our 2008 Ford Focus, well be installing the Tow Ready Custom Fit vehicle wiring harness, part number 118457.Now to begin our installation, we'll open the trunk. With the trunk open, we'll need to temporarily disconnect the drivers side tail lamp. To do this, we'll undo the two plastic screws here on the drivers side holding in the plastic trim just behind the taillight.Then using some gentle force, we'll pry the trim away where we can move it off to the side. We'll then take a 10 mm socket and remove the two nuts off the taillight studs here.With that done, we'll use a pry tool to pry back on our taillight and remove it from the vehicle. Now this exposes our connector here that we'll T into. Now with our drivers side taillight out, we'll go ahead and repeat the same procedure and remove the passenger side taillight.Now that we have both taillights out, we'll take our new wiring harness and we'll route our four pole and the connector with the green wire to it down underneath the vehicle through the hole here between the body and the bumper cover.

Trailer Wiring Harness Installation - 2012 Ford Focus

Today on our 2012 Ford Focus well be installing Tow Ready T1 connector, part number 118549. Now well begin by opening the tailgate and remove the vehicles taillight housing assemblies. To do this here on the drivers side well remove the black plastic cover and pull back the insulation liner to access the plastic wing nut holding the taillight in place. Theres another wing nut in here that well also need to undo. With both wing nuts undone we can remove the drivers side taillight. Well repeat this process to remove the passenger side assembly.

Trailer Wiring Harness Installation - 2001 Ford Focus

Today on our 2001 Ford Focus well be installing the Draw Tite four pole wiring kit, part number 18252. Before we can install the wire well need to go ahead and remove some of the interior trim panels. On the drivers side well remove the upper and side trim panels so that we can pull back the carpeting to gain access to the manufacturers wiring. There are multiple fasteners that will need to be removed in order to complete this task. Now with the panels removed you can see we have access here to the manufacturers wiring that runs to the tail lights. The blue connector here is where the main signal comes in for the tail light circuit.

see all 127 Ford Focus videos       

Stay Connected

Subscribe to email newsletter


privacy - we don't send unsolicited email reviews reviews

All images, layout and content copyright