Should Curt Spectrum Brake Controller Show Lights on Display When Connected to Truck
Updated 08/19/2019 | Published 08/17/2019 >
Products Featured in This Question
Question:
Does the unit illuminate when not in use. I have installed one in my 2010 f150 xlt with the harness recommended and get no sign of life from it
asked by: Ray
Expert Reply:
With a trailer disconnected the Curt Spectrum part # C51170 that you referenced should have the outer two lights flashing blue at idle or solid blue when the brakes are on. Since you used the correct install harness for this controller in your 2010 Ford F-150, part # C51436 you most likely have a blown fuse under the hood of the truck for the brake controller circuit. That would be only thing that would kill the circuits that power the controller.
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
- Electric over Hydraulic
- Plug-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 4 Axles
- Indicator Lights
- Multiple Trailers
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Comparing Redarc Liberty and Curt Spectrum Brake Controllers For a 2023 GMC Sierra 1500
- Q&A: Which Wireless Trailer Brake Controller Is Best
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: How Do I Know How Much of a Drop I Need on an Adjustable Hitch for Travel Trailer?
- Q&A: Comparing the Curt Spectrum Brake Controller to Redarc Tow-Pro Elite
- Q&A: Troubleshooting Curt Spectrum Brake Controller - No Lights On Control Knob
- Q&A: What Lights On Curt Spectrum Are Supposed to Activate When Pressing Brake Pedal and No Trailer?
- Q&A: Differences Between the Redarc Tow Pro Trail and Elite
- Article: Trailer Wiring Diagrams
- Article: Installing an Electric Brake Controller on 2007-2013 GM Full-Size Truck or 2007-Present GM SUV
- Article: How to Measure for Trailer Hitch Drop
- Article: 5 Things to Know About Weight Distribution Hitches
- Article: Best Bike Racks for Electric Bikes

