To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required.
Features:
Installation
This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plug on your automobile and the 4-pole connector itself - to help prevent corrosion.
California residents: click here
Exactly what I needed for my 2002 Land Cruiser that didn’t have the factory tow package. Was a direct plug and play and works flawlessly.
The harness plugged right in but has no power. I verified that the vehicle has the factory towing module. I will check for power at the fuse and start a diagnostic test on the system this weekend
This fits if you do or do not have a tow package. However, if you do not have a tow package you will need a plug in converter box for your year Toyota.
Wow! What a great experience dealing with etrailer.com. I received the hitch and wiring harness and it took longer to pull the staples out of the box than it did to install all of the parts. It is all in now and waiting to hook up the boat trailer and do some fishing. I can't say enough as to how pleased I am. If backing up the trailer goes as well as the installation, I will be grinning for the rest of my life.
Dennis B.
ok so i plugged connctor in and attached to trailer and no lights. so i checked both fuse boxes and they are ok. whats next?
Mike L.
9/11/2025
The harness is intended for vehicles equipped with the factory tow package. If you don't have the tow package, the harness might not work. What's the year/make/model of your vehicle?
Mike L.
9/17/2025
Took about 2 minutes to install everything. This is the wiring harness to use for 03 highlander with towing converter package. Connection wire that harnesshooks up to is inside the black compartment under side of the vehicle. You will need to install the 20 Amp fuse in the fuse box in the engine compartment. Everything comes with the harness kit.
Ordered on Saturday, shipped on Saturday and arrived on Wednesday. The hitch and wire harness were easy to install - from start to finish took a little over 1 hour. All holes lined up with no adjustments. Looks Great!
Extremely easy to install, even came with a fuse for the trailer lights!
Highly recommended doesn't get much easier to install
The products I ordered arrived on time and as expected. I have not had time yet to install them. the video's are very helpful and shoe me what to expect during installation.
I got a 2008 LX 570, fits perfectly! Easy to install, takes less than 15 mins. simply Plug & Play! Strongly recommended
Came on time; fits perfectly
It didn’t fit my vehicle, 2010 Lexus LX 570 even after research on forums and looking for the connector on the passenger side.
Sierra K.
5/10/2022
This product is intended as a replacement piece for your factory 4 way flat.
Trailer hitch and wiring harness I ordered for my 2002 Highlander fit and worked perfectly.lt came in perfect condition in only 3 days.
Will definitely order from etrailer again.
Replacement for my 2002 4Runner. After 20 yrs and a splice you’d have to imagine there would be some degradation to the OEM harness. The OEM harness had gotten pretty finicky. This was a direct plug and play kit. It plugs in near the driver’s rear corner, route it, a few zip ties and everything is G2G.
Product was delivered on time and included in the box with my new DrawTite hitch. I'm looking forward to installing my hitch and electrical harness this weekend. Hitch was boxed well - no damage. Thank you.
I always get my trailer hitches and supplies from etrailer and have never been disappointed. The quality is good, price is right and they ship it right out!
The wiring harness was a good thing ,easy to install came the instructions it just plugged right in, zip tie it and was done thank you
Fast and easy, perfect for what I needed
Very fast shipping exactly what I was looking for easy instill took 10 min but would have taking 5 min if I got the bracket for the 4 pin to mount but I didn't had to reuse the old one will and already recommend etrailer.com to friends
Plugged right in and worked great.
Straightforward install. Just pop the plug cover on the vehicle connector, plug the trailer connector and you're good to go.
Harness itself is extremely high quality as well as the connector for it. I only gave it 4 stars because it is about 1 foot longer than it really needs to be for the car. Not s big deal but since it’s vehicle specific I’d like it to be a little shorter to fit the application better. Overall I’d recommend though, it’s high quality and works great!
Easy set up. Easy to use.
super easy to install, so glad my Toyota was pre-wired. Easy to tell if you open the spare tire area you will see a blue towing controller box.
Came quickly. No damage. Hitch went on without a hitch. Electrical connection was very easy to install. Works great!
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer 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.
Dennis B.
5/28/2015
I absolutely love it, the best accessory I ahve added to my Vehicle!