Troubleshooting Flashing Lights on Curt Spectrum Trailer Brake Controller
Updated 08/12/2022 | Published 08/11/2022 >
Question:
My Curt 51170 brake controller I purchased the lights on the dial constantly flashes! no trailer attached,
asked by: Gary D
Expert Reply:
According to the instructions for the Curt Spectrum Trailer Brake Controller # C51170 there are 2 reasons why the lights should be flashing.
The first is if it's flashing red and yellow which means the brake controller is overloaded or there is a short-circuit somewhere on the brake controller line. To remedy this you'll need to check your wiring and connections and fix the short.
The second is if it's flashing blue and this indicates that the trailer has been disconnected or if the brakes are pressed with no trailer connected. To remedy this you'll need to check your trailer connector and wiring for any damages.
Product Page this Question was Asked From
Curt Spectrum Trailer Brake Controller - Dash Mounted Knob - Up to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 4 Axles
- Indicator Lights
- Multiple Trailers
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: curt 51515
- Video: Replacement Knob Assembly for Curt Spectrum Brake Controller Review
- Shop: Universal Wiring Adapter for Curt Trailer Brake Controllers
- Shop: Replacement Knob Assembly for Curt Spectrum Brake Controller
- Q&A: Troubleshooting Random Lights on Curt Spectrum Brake Controller
- Shop: Curt 7-Way to RV Socket LED Circuit Tester - Vehicle End
- Shop: Curt LED 5-Way Flat Circuit Tester - Vehicle End
- Shop: Curt LED 4-Way Flat Connector (Vehicle End) Tester
- Q&A: Troubleshooting Curt Spectrum Output and Sensitivity Adjustment
- Q&A: Should Curt Spectrum Brake Controller Have Lights on Display Without Trailer Connected
- Shop: Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
- Shop: Curt Universal Wiring Kit for Trailer Brake Controllers - 10 Gauge Wires
- Shop: Brake Controller
- Q&A: Troubleshooting Curt Spectrum Brake Controller that Shows 3.4 Volts on Output at All Times
- Q&A: How Many Volts Should a Brake Controller Put Out on the Highest Gain
- Shop: Trailer Hitch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer wiring
- Shop: Trailer Wiring
- Shop: Suspension Enhancement
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Article: How to Measure for Trailer Hitch Drop
- Search Results: trailer tires and wheels
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer jack
- Article: How to Measure Your Trailer Wheel Bolt Pattern


