Troubleshooting Brake Output Pin on 7-Way Connector Putting out Constant 12-Volts
Question:
On the back of a toyota tundra , the 7 pin trailer harness are youn suppose to have 12 volt output on the pin that say trailer brake at all time?
asked by: nick
Expert Reply:
I am guessing that either your trailer connector is wired incorrectly or there is a problem with your brake controller.
The only pin on the connector that should show constant voltage is the 12-volt accessory circuit. The pin for the brake output should only show output when the vehicle brakes are applied or the override switch on the brake controller is activated.
If you are getting constant 12-volt output on the 7-way connector, I would first recommend checking that the connector is properly wired, and that the brake output wire was not swapped for the 12-volt accessory circuit.
If the connector checks out fine, take a look at your brake controller. Use a circuit tester, such as part # PTW2993 and test the red wire exiting the rear of the brake controller. Make sure that there is only voltage on this wire when the brake is pressed.
Test the blue wire, there should be no output unless you activate the manual override switch.
Products Referenced in This Question
Continue Researching
- Video: Trailer Brake Controller Installation - 2002 Chevrolet Silverado 3025-P
- Shop: Brake Controller
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers
- Shop: Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - GM
- Q&A: Troubleshooting Draw Tite Activator Brake Controller that Has Brake Light on All the Time
- Q&A: Should I Have Constant 12 Volt Power On Brake Output Pin On 7-Way Connector
- Q&A: Troubleshooting Draw-Tite Activator II Brake Controller
- Q&A: Electric Brake Terminal on 7-Way Connector is Showing Constant 12 Volts Under All Conditions
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer brake controller
- Shop: Trailer Hitch
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Video: Choosing the Right Brake Controller
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Redarc Tow-Pro Liberty Brake Controller - Dash Knob - 1 to 2 Axles - Proportional
- Shop: Trailer Wiring
- Search Results: brake controller
- Video: Choosing the Right Trailer Wiring
- Article: Trailer Wiring Diagrams
- Article: How to Choose the Right Trailer Hitch Class
- Video: Tekonsha Prodigy P3 Trailer Brake Controller Review
- Search Results: etbc7
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Suspension Enhancement
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: hitch
- Article: Brake Controller Installation: Starting from Scratch
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)