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Trailer Wiring Harness Installation - 2001 Dodge Grand Caravan

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How to Install a Wiring Harness for a Trailer on a 2001 Dodge Grand Caravan

Today we are going to be installing wiring harness part number 118376 on a 2001 Dodge Grand Caravan. Okay, taking a look at the wiring harness here, you can see we have got a T-connector here. That is going to be plugging in behind the tail light assembly on the drivers side. We have also got a ring terminal here, next to this white wire that is our ground wire. We are going to be using a self-tapping screw that is provided in the installation kit. In the middle, we have got the black converter box, and on the other side of it is double-sided tape. That will allow us to adhere it to a surface inside to keep it up and out of the way. Here at the other end we have got the actual 4-pole that can be the connection point for your trailer.

So, the first thing we want to do is to go ahead and remove the rear drivers side tail light assembly. To do that, we need to remove the two push pins here. And then we will just pull the tail light assembly back. And, as you can see right here, we have got our connection point. Look in on the back side you can see the red tab in there that needs to be released first, before you can pull the connector apart. If you just push the tab over until it releases, and then there is a little button up here at the top, we are going to push in. And that will allow us to pull them apart. Now we will take our tail light assembly and set it off to the side for a moment. Take our wiring harness, and you can see you have got two ends. The one end is going to connect directly to the connector that is on the vehicle side. And we are pushing that together and pushing the lock tab over. The other end will be going into the back side of the tail light assembly. I put a slit into the grommet here, and I am actually going to store the converter box inside of here. That will keep it nice and weather safe for us.

For the 4-pole, we have actually got two options of where you can store that at. You can take it and also route it through the grommet through the inside, or you can pull it through the interior panel here and store it inside the jack storage compartment. Or you can actually route it outside here. We can just take this screw out from the bumper cover and we can feed it between the bumper and the body to where we can run it down below and attach it to the trailer hitch itself. And that is what we are going to do with this application. I am going to go ahead and connect the ground wire, and then we will feed the converter box through and route our 4-pole below. I am going to go ahead and cut a slit into the grommet here, and that is going to allow me to feed the wires back out once I have slid the converter box in. That should be enough there.

Now I am going to take my converter box and feed it in.. Again, you want to make sure that the white wire stays to the outside here, because you are going to be connecting it to the metal surface here. Then you take all three sets of wires here and feed them through the slot that we just made, just like so. Okay, next we are going to go ahead and secure our ground wire. We are going to be using the self-tapping screw that is provided with the wiring harness. Then next we are going to feed our 4-pole down between the bumper and the body and remove the Phillips-head screw that is holding the bumper cover in place. And you might want to use some kind of a pry tool to hold that open for you while you go ahead and feed the 4-pole through. And we are just going to leave that sit like so.

Next, we want to go ahead and take our other connector and plug it into the back of the tail light assembly, and then go ahead and put our tail light back on. We want to put our Phillips-head screw back in. Okay, now we are underneath the vehicle, and we are just going to feed our 4-pole from underneath the tail light assembly here over to the trailer hitch, where we are just going to attach it. To do that, we just want to make sure that we keep the wires up and out of the way before they get pinched or damaged. To do that, I am just going to feed it behind the black fascia. I will just use the plug cover to hold it onto the trailer hitch. I want to secure any loose wires that we may have left over. And this will conclude the installation of wiring harness part number 118376 on a 2001 Dodge Grand Caravan.

Syed Z.


Excellent service, delivery, product, and installation support. Thank you very much for a great experience. Will recommend to others!!

Patrick B.


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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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