Recommended Trailer Wiring For 2020 Jeep Grand Cherokee Without Tow Package
Question:
I have a 2020 Jeep Grand Cherokee and I need wiring. I do not have the factory tow package, which one should I get?
asked by: Gerald
Expert Reply:
For your 2020 Jeep Grand Cherokee I recommend the Tekonsha T-One Vehicle Wiring Harness part # 118727. It's custom made for your Jeep and it gives you a 4 way flat trailer connector so you have all the lights to tow a trailer safely and legally. It gives you your tail light functions, turn signals, and brake lights.
The wiring installs behind your tail lights and plugs inline between the factory connector and the light assembly. There is no cutting or splicing of the factory wires, however a power wire needs to be ran to the battery because the converter box is powered to prevent over draw on your Jeep's light circuits.
I recommend that when you are routing your power wire, run along the passenger side of the frame towards the front. The battery is located under the passenger seat in the Grand Cherokee, but if you run the wire into the engine bay on the passenger side, there is a positive battery post near the windshield where the connection can be made. There's a red cap near the fender, this is also where you would jump start your Jeep if needed. I've attached a photo to show you where.
The wiring is designed to stay on the outside of your Jeep near your hitch receiver, so I recommend mounting your wiring, not only will it look cleaner but also protect the wiring from dragging. You can use part # BK4F for a 4 pole mounting bracket, and part # 18140 for a no drill bracket to mount to your hitch.
Once the wiring is in, you want to test it to make sure it is working properly. You can use your trailer and run through all the light functions, however if there is a problem you would need to find out if it is the trailer or Jeep. So when testing I recommend testing the Jeep first with a tester, you can use part # I26 Curt LED 4-Way Flat Connector Tester.
I have installed many wiring kits on several different vehicles and I personally like Tekonsha wiring the best. I think they have the most reliable design. The converter box seems more robust and substantial compared to others, and it's filled with a potting material or epoxy to protect the electronics inside.
If you don't already have a hitch, I recommend the Draw Tite hitch # 75699. It's least visible hitch, and has the best ground clearance once installed.
I linked a video of when I installed the wiring on a different year Grand Cherokee.
Products Referenced in This Question
No-Drill Mount for Electrical Mounting Bracket - Short
- Accessories and Parts
- Trailer Wiring
- Mounting Hardware
- Brackets
- 4 Flat
- 5 Flat
- 4 Round
- 5 Round
- Tow Ready
more information >
Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Trailer Hitch
- Custom Fit Hitch
- Class III
- 500 lbs TW
- 5000 lbs GTW
- 7500 lbs WD GTW
- 2 Inch Hitch
- 750 lbs WD TW
- Concealed Cross Tube
- Draw-Tite
more information >
Brophy Mounting Bracket for 4-Pole Flat Trailer Connector
- Accessories and Parts
- Trailer Wiring
- Mounting Hardware
- Brackets
- 4 Flat
- Brophy
more information >
Curt LED 4-Way Flat Connector (Vehicle End) Tester
- Electrical Tools
- Testers
- Tow Function Tester
- Black
- CURT
more information >
Product Page this Question was Asked From
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Powered Converter
- Custom Fit
- 4 Flat
- Tekonsha
more information >
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Joseph F.
7/10/2020
We are renting an Airstream 2018 Sport 16RB Bambi 16ft. This is our first time RV-ing. We are looking to rent different models of RVs 3 or 4 more times before deciding before buying. We bought in January a 2020 Jeep Grand Cherokee Limited X, V8-5.7L with heavy duty cooling system with tow package. I know from my research we can easily tow the AS Sport. In preparation for another RV rental that never came to pass before Covid-19, we bought from you all the Curt Echo Wireless trailer brake controller and the K-Source Dual lens Towing mirrors. We will be traveling less than 500 miles. I am told by the RV owner that their trailer ball size is 2-5/16. Which ball mount do you recommend? Do we need anti-sway? How about a trailer break? Thank you in advance for your response and remember we are newbie at this adventure. Thanks.