2015-2021 Subaru WRX / STI VA Fishbone Sequential LED Tail Lights Installation Guide

Important: This online guide is a fitment-aware overview for the matched RIGNOX product. Before removing original parts or connecting wiring, compare the product-page image gallery (rear housing, plugs, included harnesses) with your factory lamps and confirm the connector layout, transferred parts, wire routing, and vehicle-specific fastener locations on 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: 2015-2021 Subaru WRX / STI VA Fishbone Sequential LED Tail Lights
• Product type: Tail lights
• SKU: T-WRX15-SR-FSH, T-WRX15-SW-FSH, T-WRX15-RGB-FSH
• Variants: Smoke Red, Fishbone; Smoke White, Fishbone; Smoke RGB, Fishbone
• Fitment: Fits: 2015-2021 Subaru WRX and WRX STI (VA), sedan, all trims. Direct replacement for the factory tail lights with no modification required.
• Product page: View matching RIGNOX product details

Product notes

• Sequential, startup, or animation functions are product/variant dependent. Test them before final reassembly.
• The Smoke RGB variant is controlled through the Happy Lighting app over Bluetooth. This variant does not ship with a remote. See the RIGNOX RGB light app guide for pairing.
• The RGB panel runs on a white substrate. Brake, tail, turn and reverse always run their correct road colours regardless of the RGB setting.
• RGB/app-controlled functions 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: 2015-2021 Subaru WRX / STI VA Fishbone Sequential LED Tail Lights.
• SKU check: Confirm your kit SKU or variant matches T-WRX15-SR-FSH, T-WRX15-SW-FSH, or T-WRX15-RGB-FSH before removing original parts.
• Product-page check: Compare the product-page image gallery with your factory lamps before removing trim or connecting wiring.
• 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 and cargo trim open until every lighting function passes testing.

Checkpoints before you start

• Connector layout: Compare each vehicle connector, adapter harness, and included extension wire against the product-page images before powering the RIGNOX tail lights.
• Harness routing: Route linking harnesses through the factory grommets or existing trim paths. Keep wiring away from hinges, latch movement, weather seals, exhaust heat, and sharp sheet-metal edges.
• Transferred parts: Move brackets, bulb holders, seals, or decorative plates only when the removed original lamp clearly carries a part the new one does not.
• RGB variant: Confirm controller power, Happy Lighting app pairing, mode change, and local road-lighting use before final trim reassembly.

Tools and supplies

• Trim removal tool or panel clip tool
• Metric socket and ratchet set; confirm the exact socket sizes on the vehicle before removal
• Phillips and flat screwdrivers
• Clean microfiber towels and masking tape for painted trunk 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

1. Open rear access: Open the trunk and remove only the trim panels, access covers, cargo liners, or clips needed to reach the lamp fasteners.
2. Expose lamp fasteners: Fold back liners or sound insulation carefully so clips can be reused during reassembly.
3. Support the lamp: Hold the lamp with one hand while removing nuts, bolts, screws, clips, or bulb holders.
4. Disconnect vehicle connectors: Press each lock tab and pull by the connector body, not by the wires.
5. Release locating pins or ball studs: Pull the lamp straight out along its locating pins. Do not pry against painted body panels.
6. Repeat by side: Complete one side fully before starting the other, so the original assembly stays available as a reference.

Install the RIGNOX tail lights

1. Compare assemblies before mounting: Compare the removed original tail light and the RIGNOX tail light. Transfer bulb holders, seals, brackets, or decorative pieces only when the original clearly carries a part the new one does not.
2. Connect the main harness: Match each included connector to the corresponding vehicle connector and confirm the lock tab clicks into place.
3. Route linking harnesses: Run extension wires, controller wires, or decoder wires along the factory trim or grommet path.
4. Secure wiring before mounting: Use zip ties to prevent rubbing, pinching, water pooling, or contact with hinges, latch movement, weather seals, exhaust heat, and sharp metal edges.
5. Seat and fasten the lamp: Align locating pins, ball studs, clips, and body gaps. Tighten original retainers evenly without over-tightening plastic mounts.
6. Reinstall trim last: Leave trim open until every electrical function passes testing.

Electrical and function test

1. Test parking/running lights, brake lights, left and right turn signals, hazards, and reverse lights.
2. Confirm the turn signal fires as a sequential sweep on both sides.
3. For the Smoke RGB variant, confirm controller power, Happy Lighting app pairing, colour selection, dynamic effects, and speed/brightness controls.
4. Confirm brake, tail, turn and reverse run their correct road colours with RGB active.
5. After all tests pass, reinstall trim panels and close the trunk 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 light 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 supplied with the kit.
• Brake, reverse, running, or turn function is wrong: Stop and recheck the connector choice and wire routing against the product-page 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 does not respond: Confirm the variant is the Smoke RGB build, the controller has power, and the Happy Lighting app is paired over Bluetooth. This variant has no remote.

Need help?

If the connector, transferred part, or trim layout does not match the product-page 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.