Important: This online guide is a fitment-aware overview for the matched RIGNOX product. Before removing original parts or connecting wiring, review the installation reference images on this page and confirm the connector layout, transferred parts, wire routing, and vehicle-specific fastener locations for your exact vehicle.
Safety warning: Do NOT use dielectric grease or weather-sealing grease on connectors or sockets. Grease can cause connection problems and may affect warranty coverage.
Matched product
- Product: 2018-2022 Honda Accord 10th Gen Sequential LED Tail Lights
- Product type: Tail lights
- SKU: T-ACC10-SDG, T-ACC10-FSH-CW, T-ACC10-FSH-SR, T-ACC10-FSH-SRGB, T-ACC10-SS-CW, T-ACC10-SS-RGB
- Variants: Smoked Digital w/ App Control; Clear White Fishbone; Smoked Red Fishbone; Smoked Fishbone RGB w/ App Control; Clear White Starry Sky; Smoked Starry Sky RGB w/ App Control
- Fitment: Fits: 2018-2022 Honda Accord 10th Gen, including both 2018-2020 pre-facelift and 2021-2022 facelift (rear lamp structures are interchangeable for this application) - trims LX, EX, Sport, EX-L, Touring, Hybrid.
- Product page: View matching RIGNOX product details
Product notes
- Sequential, startup, or animation functions are product/variant dependent. Test them before final reassembly.
- RGB/app-controlled functions apply only to RGB variants and should be used according to local road-lighting regulations.
- The matched product page references road-lighting compliance information. Review the product page for the exact compliance language for this item.
Before you begin
- Vehicle/product: 2018-2022 Honda Accord 10th Gen Sequential LED Tail Lights.
- SKU check: Confirm your kit SKU or variant matches T-ACC10-SDG, T-ACC10-FSH-CW, T-ACC10-FSH-SR, T-ACC10-FSH-SRGB, T-ACC10-SS-CW, T-ACC10-SS-RGB before removing original parts.
- Reference-first workflow: Review the installation reference images on this page before removing trim or connecting wiring. This guide includes confirmed details from the available reference text and images.
- Power and safety: Switch the vehicle off before unplugging connectors. Disconnect the negative battery terminal when handling wiring, fuse taps, or exposed circuits.
- Protect the vehicle: Use clean towels or masking tape around painted panels and trim edges. Do not force clips or pry against painted surfaces.
- No connector grease: Do not apply dielectric grease or weather-sealing grease to connectors or sockets.
- Rear lamp note: Leave trunk, hatch, cargo, or tailgate trim open until every lighting function passes testing.
Reference image checkpoints
- Connector layout: Compare each vehicle connector, adapter harness, and included extension wire with the reference images before powering the RIGNOX tail lights.
- Inner and outer lamp sequence: If the vehicle has trunk-lid, hatch, through-light, or outer corner lamps, remove and reinstall them in the sequence shown in the reference images.
- Harness routing: Route linking harnesses through the indicated grommets or trim paths. Keep wiring away from hinges, latch movement, weather seals, exhaust heat, and sharp sheet-metal edges.
- Transferred parts: Move cameras, brackets, BLIS modules, bulb holders, seals, or decorative plates only when the matching reference image shows that transfer.
- RGB/app variants: Confirm controller power, pairing, mode change, and local road-lighting use before final trim reassembly.
Confirmed reference details
- Tools confirmed: Ratchet wrench, 10mm socket, trim removal tool, and Phillips screwdriver.
- 608 removal: Remove all clips inside the rear trunk lid, remove the trim panel, remove tail-light screws/nuts, disconnect the bulb socket, and remove the tail-light assembly.
- 608 trunk trim: Remove the Phillips screw shown in the reference before prying the rear decorative panel clips. Remove the tail-light trim panel and the two screws with a 10mm socket.
- 608 connection: Plug the flat and curved tail-light connectors together, then into the wiring harness. Replace the original T10 socket with the product T10 bulb and install it into the bulb socket.
- 608 routing: Route the wiring harness along the side and tuck it inside the rear trunk support panel.
- 618 removal: Remove trunk interior trim fasteners, remove trim-panel fixing screws, remove the outer trim panel, then remove two fixing screws and two nuts with a 10mm socket as shown.
- 618 connection: Plug flat and curved lamps into the plug-in cable. The curved lamp needs to be plugged in first, and the middle connecting wire can be hidden in the trunk.
Tools and supplies
- Trim removal tool or panel clip tool
- Metric socket and ratchet set; confirm the exact socket sizes against the reference images before removal
- Phillips and flat screwdrivers
- Clean microfiber towels and masking tape for painted trunk, hatch, tailgate, and quarter-panel edges
- Electrical tape and zip ties for securing included harnesses only
- A helper for brake-light and turn-signal testing
Remove the original tail lights
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Remove the trunk-side access cover: Open the trunk. Use a flat-head screwdriver to carefully pry up and remove the plastic access cover along the inner edge of the trunk opening.
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Remove the outer tail light mounting bolts: Use an 8 mm socket or Phillips screwdriver to remove the two exposed fasteners securing the outer tail light assembly.
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Release the outer tail light assembly: Hold the tail light firmly and carefully work it toward the outside of the vehicle while gently rocking it. Release the assembly from the side retaining clips instead of pulling it straight rearward.
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Disconnect and remove the outer tail light: Use a screwdriver to release the wiring-harness retainer from the lamp housing. Press the connector locking tab, disconnect the electrical connector, and remove the factory outer tail light assembly.
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Remove the trunk-lid liner: Use a flat-head screwdriver or trim removal tool to release all plastic retaining clips from the trunk-lid liner, then remove the liner from the trunk lid.
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Remove the center garnish mounting bolts: Remove the two mounting fasteners on each side of the trunk lid that secure the center garnish, for a total of four fasteners.
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Remove the trunk center garnish: Grip the edge of the center garnish and carefully pull it outward to release the internal retaining clips. Continue releasing the clips along the garnish until the entire panel can be removed.
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Disconnect the trunk-lid electrical connectors: Press the locking tabs and disconnect the connectors for the rearview camera, reverse lights, and trunk-release switch. Use a screwdriver or trim removal tool to release the wiring-harness retainers from the trunk lid.
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Remove the inner tail light assemblies: Remove the remaining two fasteners securing each inner tail light. Press the retaining clip outward and carefully remove each factory inner tail light assembly from the trunk lid.
Install the RIGNOX tail lights
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Connect and install the Rignox tail light assemblies: Connect the Rignox wiring harness to the factory connector and reverse-light connector. Join the matching large and small harness connectors, making sure the right-side and left-side connectors are paired correctly. Position the outer and inner tail light assemblies in their original mounting locations and secure them with the previously removed fasteners.
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Test all tail light functions before final reassembly: Before fully tightening the mounting fasteners and reinstalling the removed trim components, turn on the vehicle lights and verify the running lights, brake lights, turn signals, and reverse lights.
Electrical and function test
- Test parking/running lights, brake lights, left and right turn signals, hazards, reverse lights, fog light if supported, and startup animation if equipped.
- For through-light or linking-harness products, test both sides before reinstalling hatch, trunk, or cargo trim.
- If a camera, BLIS module, bulb holder, resistor, decoder, or controller was transferred, confirm that related vehicle functions have no warning message.
- For RGB/app variants, confirm controller power, app pairing, normal mode, RGB mode, speed/brightness controls, and the mode required for road use.
- After all tests pass, reinstall trim panels and close the trunk, hatch, or tailgate slowly to confirm no wire is stretched or pinched.
Final check
- All connectors are fully seated and locked.
- All included harnesses are secured away from movement, sharp edges, water paths, and heat sources.
- Both lamps sit flush with even body gaps, properly seated seals, and no trapped harness under the weather seal.
- All tail lights functions test correctly on both sides with a helper operating the controls.
- No warning lights, hyperflash, flickering, abnormal heat, moisture entry, or loose modules remain after a short function check.
Troubleshooting
- One tail light does not turn on: Recheck the main connector, side-specific extension wire, and any plug-in adapter shown in the reference images.
- Brake, reverse, running, or turn function is wrong: Stop and compare the connector choice and wire routing with the reference images before moving pins or changing wiring.
- Warning, flicker, or hyperflash appears: Confirm any included decoder, resistor, or harness adapter is installed exactly for this product and vehicle trim.
- Trim will not sit flush: Check for a trapped harness, misaligned clip, folded weather seal, or incorrect grommet position.
- RGB/app feature does not respond: Confirm the product variant supports RGB, the controller has power, and the app or remote is paired before closing trim.
Need help?
If the connector, transferred part, or trim layout does not match the reference images, stop before modifying the vehicle. Contact RIGNOX support with your order information, vehicle year/model/trim, product variant, and clear photos of the tail light, connector, and harness layout.
End of installation guide. (c) RIGNOX - All Rights Reserved.
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