Installing Third Brake Light and Dome Light into Truck Bed Cap
Question:
Best way to hook up the brake and interier lights on truck cap. Truck 2001 Silverado 3/4 HD reg. bed w/ trailering package. 7 way connector,light blue wire out of wire harness by plug is caped off ? Thank You
asked by: Warren
Expert Reply:
If you will take a look at the wiring harness up above the spare tire, you should find the connector that the 7-way plugs into. If you trace the loom back just a bit, you will find a light blue wire that is used for the 3rd brake light for your truck cap. If you will follow the provided link, see Step 3 figure B. This photo will show you the location of this wiring harness above the spare tire.
For the interior dome light, there are two common methods both of which will require a switch, such as part # PK34513. You can either tap the feed for that dome light into the tail light circuit, which means that the light will only work when the running lights or headlights of the vehicle are switched on, or it can be tapped into the 12-volt feed that runs to the 7-way. I would recommend using that 12-volt feed, so that you will not need to turn on the head lights to activate the circuit.
Products Referenced in This Question
Pollak Light-Duty Toggle Switch - On-Off - 12 Volt - 10 Amp - 6" Wire Leads
- Accessories and Parts
- Wiring
- Switches
- Toggle Switch
- 10 Amp
- Pollak
more information >
Product Page this Question was Asked From
Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket - Vehicle End
- Trailer Wiring
- Trailer Connectors
- Vehicle End Connector
- Plug Only
- 7 Round - Blade
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Video: Fulton Trailer Winch - Standard Hand Winch - F142104 Review
- Shop: Fulton Single Speed Winch - 8" Long Handle - 1,300 lbs
- Shop: BoatBuckle PWC Winch Strap with Hook and Soft Tie - Loop End - 2" x 15' - 3,500 lbs
- Shop: Replacement Yakima Control Tower for Factory-installed Tracks (QTY 1)
- Search Results: boat trailer winch strap
- Search Results: a.r.e. parts
- Video: Dutton Lainson Hand Winch Strap with Safety Hook Review
- Video: Dutton-Lainson Trailer Winch DL24249 Review
- Shop: Hand Winch Strap with Safety Hook, 2" Wide x 25' Long - 4,000 lbs.
- Search Results: winch strap
- Shop: Trailer Wiring
- Shop: Front Mount Hitch
- Shop: Curt Front Mount Trailer Hitch Receiver - Custom Fit - 2"
- Q&A: 7 Way Plug For Wiring 3rd Brake Light On A Leer Camper Shell
- Q&A: Making 7-Way to Camper Shell Third Brake Light Adapter
- Search Results: 44649
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Hitch
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Video: Choosing the Right Trailer Wiring
- Q&A: Seal With Dimensions to Replace 171255UC
- Video: EcoHitch Hidden Front Mount Trailer Hitch Installation - 2021 Ford F-250 Super Duty
- Search Results: 68149
- Shop: Brake Controller
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Article: Trailer Wiring Diagrams
- Q&A: Replacement Clearance Lights Needed for GLO-BRITE 122R and 122Y Lights
- Video: Draw-Tite Max-Frame Trailer Hitch Installation - 2019 Chevrolet Equinox
- Shop: Fifth Wheel Hitch
- Q&A: How to Measure Hub Face of Mobile Home Hub and Drum
on Trailer Wiring
