Running a tailgate reverse camera and an amp positive wire in a 2017 Chevy Silverado WT
This build runs a tailgate-mounted reverse camera and a dedicated positive power wire for an amplifier in a 2017 Chevy Silverado WT. The job involves removing interior and tailgate trim, routing camera video and trigger wiring through the tailgate and cab using protected grommets, and running a fused amp power lead from the battery to the amplifier location.
Build Sequence
1. Plan wiring route and gather parts
Decide where the camera will mount on the tailgate, where the amp will be located in the cab or under-seat area, and plan the path for both the video and high-current power wire. Gather camera, RCA harness, power kit, grommets, connectors and tools.
2. Disconnect battery
Disconnect the negative battery terminal to prevent shorts while working on electrical connections and routing high-current power wire.
3. Remove interior and tailgate trim
Use trim tools and sockets to remove the interior panels in the cab area where wires will route, and remove the tailgate liner or access panels to expose the hinge/grommet area for routing the camera cable.
4. Prepare pass-through with grommet
Locate an existing rubber boot or hinge pass-through between the tailgate and cab; if required, make a small hole and install a rubber grommet to protect wires from chafing. Ensure the grommet seals against water intrusion.
5. Run video cable from tailgate to head unit
Feed the RCA/camera harness through the grommet and along the planned route into the cab, using fish tape or pull wire. Secure the cable with zip ties and avoid sharp edges and heat sources.
6. Mount the camera to the tailgate
Attach the camera to the chosen location on the tailgate, seal mounts with silicone/adhesive if needed, and verify camera orientation. Reinstall tailgate liner carefully, ensuring the cable is not pinched.
7. Run amp power wire from battery to amp location
Route the 4 AWG power cable from the battery through the engine bay, through the firewall (using an existing grommet if possible), and into the cab to the amplifier location. Secure wire to chassis with zip ties and keep away from moving parts and hot exhaust components.
8. Install inline fuse at battery
Install the inline fuse holder as close to the positive battery terminal as possible (within 6-18 inches). Attach ring terminal to battery, route cable away from battery acid and moving parts, and insert the appropriately sized fuse (commonly 100A for a 4 AWG feed for most small-medium amps—verify amp draw).
9. Tap reverse light for camera trigger / power
Locate the reverse lamp wiring in the tailgate/cargo light harness and use an add-a-circuit, butt splice, or solder joint to connect the camera's power/trigger to the reverse signal so the camera activates when in reverse. Verify polarity and insulation.
10. Make final terminations and seal
Crimp or solder ring terminals on the power and ground wires, apply heat-shrink or dielectric grease, and properly secure grounds to clean, unpainted metal. Protect all splices with heat-shrink and electrical tape as needed.
11. Test functions and reassemble
Reconnect the battery, test the camera image when placed in reverse, verify the amplifier receives power and the fuse does not blow. Once tested, reassemble interior panels and tidy wiring with zip ties and loom.
Frequently Asked Questions
What size fuse should I use for the amp power wire?
Choose the fuse size based on the amp's recommended fuse rating and the wire gauge. A 4 AWG wire is commonly protected with a 100A fuse for many aftermarket amps, but always match the fuse to the amplifier manufacturer's specification.
VIEW FULL ARTICLE →How do I route wires through the tailgate hinge without chafing?
Use the factory rubber grommet/boot or install a dedicated rubber pass-through grommet. Route wires so they have slack through the hinge movement and secure them with zip ties to prevent rubbing against metal edges.
VIEW FULL ARTICLE →Can I tap the reverse light power instead of running a dedicated trigger wire?
Yes — tapping the reverse light is a common method to trigger a backup camera. Use a proper splice (solder or quality butt connector) or an add-a-circuit and ensure the connection is insulated and protected from moisture.
VIEW FULL ARTICLE →Related Builds
Parts Used (9)
Small waterproof camera mounted to tailgate; likely includes mounting hardware and video output.
Used to carry video signal from tailgate to head unit or video input.
Thick power cable to supply amplifier; size chosen based on typical aftermarket amps — adjust gauge for amp draw.
Install within 18 inches of battery on the amp positive lead to protect the run.
Protects wire where it passes through metal or weather seals in the tailgate/cab hinge.
For battery, ground, and splice terminations; use proper gauge-rated terminals for 4 AWG.
Seals and insulates crimp/solder connections; recommended for long-term reliability.
Optional method to tap reverse light power to trigger camera or video input.