Is it Normal to Only See 9 Volts on the Output Circuit of a Brake Controller
Updated 04/13/2016 | Published 04/11/2016
Question:
I am getting 9 volts at the trailer pin connector when the trailer brakes are applied is this the correct voltage Regards
asked by: John F
Expert Reply:
Brake controllers allow you to vary the voltage applied to the trailer brakes to allow for different braking power. If the controller is set to it's max output voltage it should be right at 12 volts. Be sure to have the vehicle running too so that you don't see any voltage drop off just from the alternator.
If the controller has it's gain turned all the way up and it's only at 9 volts then that would indicate you have an internal problem and the controller would need to be replaced.
I attached a troubleshooting article on brake controllers for you to check out as well.
Product Page this Question was Asked From
Pollak Heavy-Duty, 7-Pole, Round Pin, Trailer Wiring Connector - Trailer End
- Trailer Wiring
- Trailer Connectors
- Trailer End Connector
- 7 Round
- Plug Only
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: 92655
- Shop: Easy Grease Trailer Hub and Drum Assembly for 5.2K & 6K Axles - 12" - 6 on 5-1/2 - Pre-Greased
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Q&A: Looking For Replacement Brake And Hubs For Trailer With 92655 Hubs
- Q&A: Will The Etrailer.com Brake Kit # AKEBRK-7-SA Fit Existing AL-KO Hub And Drums?
- Q&A: Troubleshooting Trailer Brakes Getting Only 8 Volts Of Power
- Video: Bright Way Push-to-Test Trailer Breakaway Kit Review and Installation 3802308
- Q&A: Replacement Bearings for a AL-KO 92655 Hub
- Q&A: Replacement Bearings & Grease Seal For 92655 AL-KO Hub & Drum
- Video: Dexter Trailer Hub and Drum Assembly Spec Review
- Video: Let’s Check Out the Dexter Trailer Hub and Drum Assembly
- Video: Hands-On with the Dexter Trailer Hub and Drum Assembly
- Video: Checking Out the Curt Hook with Spring Loaded Safety Latch for Safety Chains and Cables
- Search Results: safety cable hook
- Search Results: clevis hooks trailer safety chains
- Search Results: trailer led brake lights
- Search Results: trailer hubs and drums
- Search Results: clevis hitch
- Search Results: breakaway switch cable
- Article: Testing Trailer Brake Magnets for Proper Function
- Q&A: Is 14 Gauge Wire Too Small for Electric Trailer Brakes
- Q&A: Troubleshooting Weak Trailer Brakes When 2023 Ram 3500 Brake Controller is at Full Power
- Shop: Fastway Zip Coiled Trailer Breakaway Cable w/ Plunger Pin - 4' Long
- Shop: Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 11 Diodes - Clear Lens
- Shop: Curt Hook with Spring Loaded Safety Latch for Safety Chains and Cables - 3/8" - 2,000 lbs
- Shop: Titan Chain Clevis Hook w/ Spring Loaded Latch for Chain w/ 5/16" Thick Links - 4,700 lbs
- Shop: Thinline LED Trailer Tail Light - Stop, Tail, Turn - Submersible - 9 Diodes - Clear Lens
- Shop: Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 - Pre-Greased
- Shop: Brake Controller
- Video: Dexter Axle Trailer Brakes BP01-110 Review
on Trailer Wiring
