Troubleshooting Trailer Lights and Blower Motor for 2015 Jeep Cherokee After Launching Boat
Question:
Hello, I recently had a trailer hitch and wiring installed on my 2015 Jeep Cherokee Trailhawk. The wiring is a 4-way flat. I used an adapter in order to pull my recently purchased boat. 4-way flat to 7-way round. For the first day or so i had no problems pulling the trailer and the lights were all working properly. Unfortunately, the first day I launched the boat in water, i realized the trailer lights are now not working and additionally, my blower motor for AC/Heat is also not working. I checked almost every single fuse but they all appear fine. I have not checked the relays. Was wondering if you are familiar with a similar situation or if there is a specific fuse / relay I should spend specific time checking. Thanks in advance!
asked by: John
Expert Reply:
My first thought after reading this is if you disconnected the wiring from your trailer before you backed your trailer in the water to launch your boat. If you didn't then that would explain the issue. Since water and electricity don't like each other very much what probably happened is that (if you didn't disconnect anything) you had a short somewhere and you need to inspect all of your wiring. It could be that the wiring connector itself either on your 2015 Jeep Cherokee or your boat trailer has been shot.
Check your connectors for any corrosion as well as the wiring on your trailer for any places that have corrosion or are bent and replace as necessary. Using dielectric grease like part # 11755 helps to protect the connectors from debris, corrosion, and water.
I'm not sure why your AC/Heat is not working but it definitely could be related. Try checking the fuse in the 39 position as that should be your HVAC motor. If you installed the 4-Way on your Cherokee aftermarket then it could be that the module that came with it is toast as well, especially if your Jeep lights are working. You can verify this by using a circuit tester # PTW2979 or a multimeter # PTW1714 to test the functions of the 4-Way and ensure they are working properly (see attached photo).
Products Referenced in This Question
Product Page this Question was Asked From
Dielectric Grease for Electrical Connectors, 2 oz.
- Accessories and Parts
- Trailer Wiring
- Wiring
- Dielectric Grease
- LubriMatic
more information >
Featured Help Information
Instructions
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Converting From 7-Way Round to 7-Way Flat Connector
- Q&A: Replacement Clearance Lights Needed for GLO-BRITE 122R and 122Y Lights
- Article: Trailer Wiring Diagrams
- Article: 5 Things to Know About Weight Distribution Hitches
- Q&A: Recommended Trailer Wiring Harness For 2020 Ford Edge Titanium
- Article: 2023 Holiday Must Haves
- Q&A: What is 22 mm Size of Wheelmaster Lug Nut # WM9062 Refer To
- Article: How to Choose the Right Trailer Hitch Class
- Article: How to Accurately Measure Trailer Leaf Springs
- Article: Flat Towing Package for 2007-2018 JK Jeep Wrangler and Wrangler Unlimited
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: What Are the Thread Sizes of the Orifice Connector for Trailer Brake Actuators
- Q&A: Replacing Trailer Actuator Buddy 32220 Reverse Solenoid on Triton Bass Boat Trailer