No Power on Red Brake Controller Wire when Brake Pedal Pressed on a 2013 Toyota Tundra
Question:
I installed a Tekonsha P3 brake controller in my 2013 Toyota Tundra with the wire harness specifically designed to connect the controller to the trucks factory wiring. The brake controller only works when using the lever, it has never worked when the brake pedal was depressed. Last week, I used a test light to confirm the fuse 15amp fuse # 10 under the hood was good, in addition all three brake lights work, but there was no power coming through the red wire when the brake pedal was depressed. I replaced the brake light switch a couple days ago because I was told that was the most likely culprit. Ive since confirmed all three brake lights still work, but the trailer brakes two different trailers only work when using the lever. The black wire is hot, the blue wire is hot when the lever is used, white wire is grounded to the firewall, and red wire does nothing. What should be my next steps in troubleshooting? Is it possible the wire harness/adapter is not wired correctly? Thank you!
asked by: Curt W
Expert Reply:
The wiring harness you should be using on your 2013 Toyota Tundra is # 3040-P. While it is unlikely it is wired incorrectly it is possible. You can use your test light to test the connector on the vehicle (where 3040-P plugs into) and see if it has power when you step on the brake pedal. If it does then check to see if the red wire is connected in the corresponding location in the harness. If not you can move it.
If there is no power then there is something amiss on the vehicle side that will need to be tracked down. You mentioned check a fuse but didn't say what that fuse was. Check the stop light or CHMSL fuses if you haven't already. Its likely not this since all of your brake lights work but you never know!
Another option is to attach the brake controller red wire to the brake switch instead. The correct brake switch wire should be the orange wire on your truck but you can use the test light to verify that.
Products Referenced in This Question
Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Toyota and Lexus
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Tekonsha
more information >
Product Page this Question was Asked From
Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- Tekonsha
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Brake Controller
- Shop: Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
- Shop: Single Axle Jeep Style Trailer Fender - Diamond Plate Aluminum - 13" to 15" - Qty 1
- Q&A: Troubleshooting a Tekonsha P3 Brake Controller that Reads Trailer Not Connected
- Shop: Base Plate for Tow Bar
- Shop: Vehicle Tow Bar Brake System
- Search Results: 3014~p
- Search Results: 3028~p
- Search Results: 3082~p
- Search Results: 3045~p
- Search Results: 3031~p
- Search Results: 3025~p
- Search Results: 3064~p
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Nissan and Infiniti
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers
- Q&A: 10k Dexter Replacement Hub for a 8-415
- Q&A: Replacing Mobile Home Trailer Hub With a Hub that is Compatible with Standard Rims and Tires
- Video: Bauer Products 4-Way Trailer Plug Holder Review
- Video: Review of Bauer Products 4-Way Trailer Plug Mount - BA69VR
- Q&A: Semi Trailer Light Function Locations on Heavy Duty 7-Way Pin Connection
- Q&A: No Power at 12 Volt Pin In 7-Way on a 2008 Toyota Tundra
- Q&A: Where Does the Red Wire for a Brake Controller Attach to a Vehicle
- Video: Trailer Brake Controller Wire Testing
- Article: Troubleshooting Brake Controller Installations
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: Which Pin On A 7-Way Should Have Constant 12V Power When Vehicle Is Running
- Article: Testing Trailer Brake Magnets for Proper Function
on Accessories and Parts
