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Trailer Wiring Harness Installation - 2003 Dodge Caravan

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How to Install a Trailer Wiring Harness on a 2003 Dodge Caravan

Today at on this 2003 Dodge Caravan we are going to be installing part number 118376 from Tow Ready. The first thing we are going to do is gain access to our trunk. We are going to need to remove the fascia here and remove a couple of clips so we are able to pull back our panel a little bit to gain access to our wiring harness. We are going to start removing our bumper fascia. We are going to use a rivet tool remover and just popping them up. It is a pretty simple task. If you do not have rivet tool remover you can just take a flat head screwdriver and slide it under and just pry up. That will also work as well. We are just going to take this and set it aside. Then we are going to take the rivet tool remover and start unclipping a couple of clips from here. 00:49

The reason why we pulled this back is because we have to gain access to the hole back here to where we can run our harness through the hole here and out to plug into our tail light harness. Next we are going to remove the driver side tail light. To remove the tail light we just take these plastic rivets and just remove them and the tail light assembly will come out. As you can see our tail light assembly just falls out like that. Now that we have our tail light loose we are going to disconnect it. We are going to take the little red tab and pull it out to where we can disconnect it. We are going to set our tail light aside. 01:49

We are going to take our wiring harness, and as you can see it has got male and female end. We are just going to match them up, plug them in. Then we are going to take our grommet and pull it out. We are going to cut it right here to where we can pull it off for now. We are going to take the rest of our wiring harness and we are going to feed it through the access hole until we get the entire harness inside the sheet metal. We are going to leave the connection point that is going to go back into our tail light out. We are going to take our grommet and put it back on our new connection point and put it back in place. Then we are going to take our tail light and reconnect our tail light and reinstall it on the vehicle. Make sure when connecting it that you push that locking tab over and then take your plastic rivets that we removed earlier and just put those back in position. 03:00

Now we can go on to the inside of the vehicle and show you what is next. We just want to remove the storage panel. We are going to be taking our 4-pole and pulling it through there and that is where we are going to be storing it. Pull our ground through this part and we are going to be attaching it to the existing ground here. We are going to remove this nut and attach our ground to it. Now that our ground is done we are going to take our modulite box and attach it to the inner sheet metal using the two sided sticky tape that is on the other side of the box. We want to make sure that this spot is cleaned before you adhere to it. Remove the film and take the modulite box and stick it in position. With our modulite box in position we are going to take our paneling and put it back in position. Then you want to put the fascia back in. Now we are going to show you how to use your wiring harness. Our wiring harness is stowed away in the jack storage compartment. You just want to remove the storage panel, pull out your 4-pole harness like so, then you just want to hang it out of your rear. Make sure you keep it away from the center hook so it does not smash or cut any of your wires. Then you just want to close your trunk. And as you can see you can pull out the length that you need for your accessories. That will conclude the installation for part number 118376 on a 2003 Dodge Caravan.

Info for this part was:

Employee Zack K
Video Edited:
Zack K
Employee Joshua S
Video Edited:
Joshua S
Employee Patrick B
Video Edited:
Patrick B
Employee Nicholas E
Test Fit:
Nicholas E
Employee Cole B
Installed by:
Cole B

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