2015-2017 Ford Mustang S550 Pre-Facelift LED Triple Projector Headlights | Triple Bar DRL Installation Guide

Important: This online guide is a product-image-verified overview for the matched RIGNOX product. It uses the product page, product reference images, and visible lighting-function details to guide product-side checks. Confirm hidden vehicle-side fasteners, trim clips, and wiring access points on your exact vehicle before removal.

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: 2015-2017 Ford Mustang S550 Pre-Facelift LED Triple Projector Headlights | Triple Bar DRL
• Product type: headlights
• SKU: H-MUS15, H-MUS15-RGB
• Variants: Clear White; Clear RGB w/ App Control
• Fitment: Fits: 2015-2017 Ford Mustang S550 Pre-Facelift - V6, EcoBoost, GT, Shelby; compatible with stock halogen reflector and OE HID projector headlights. DRL: White
• Product page: View matching RIGNOX product details

Product image checkpoints

• The product reference images show direct-fit, plug-and-play style connection details. Match the supplied connector to the vehicle connector and confirm the lock tab seats fully before reinstalling trim.
• Back-side or plug detail images are available for this item. Compare those photos with the removed original lamp before routing the harness.
• The visible product-function references indicate projector beam output, low beam, DRL, sequential turn signal, white/amber switchback behavior, RGB/app function checks for this product. Confirm beam pattern and function behavior before final bumper or grille reassembly.
• If the kit includes a decoder, resistor, control module, or relay, secure it away from heat, moving parts, water paths, and sharp metal edges. Do not add universal electrical parts unless support confirms they are needed.
• RGB or app-controlled lighting is for show/display use where allowed. Confirm standard road-light functions operate normally before using any color mode.

Product notes

• Use the product reference images on this page as the product-side visual check for connector layout, rear housing shape, and lighting functions.
• Original vehicle trim, clip style, and fastener locations can vary by year, trim, and previous repairs. Remove panels slowly and verify each fastener before pulling.
• Road-lighting compliance and off-road/show-use notes are product specific. Review the matching RIGNOX product page for the exact language for this item.

Before you begin

• Confirm the exact product: Compare the RIGNOX headlights to the product reference images, including rear housing, plug layout, lens style, and included modules.
• Work powered down: Park on level ground, switch the vehicle off, and disconnect the negative battery terminal when handling wiring.
• Protect body panels: Use clean towels or masking tape near painted edges around the hood, grille, bumper edge, or fender liner area.
• Do not force clips: If a lamp or trim panel does not move, stop and look for another fastener or locating pin.
• No grease on connectors: Do not apply dielectric grease or weather-sealing grease to connectors or sockets.

Tools and supplies

• Trim removal tool or panel clip tool
• Metric socket and ratchet set; verify exact sizes on the vehicle before removal
• Phillips and flat screwdrivers
• Clean microfiber towels and masking tape
• Electrical tape and zip ties for securing included harnesses only
• A wall or flat vertical surface for beam-pattern checking

Remove the original headlights

1. Remove the radiator support fasteners: Remove the upper engine bay plastic cover, if equipped, and remove the screws securing the bumper to the radiator support.
   
   
2. Remove the underbody shield fasteners: Raise the front of the vehicle, then remove the screws and retaining clips securing the lower shield.
   
   
3. Remove the wheel-well clips and side screws: Remove the retaining clips from the wheel-well liner, pull the liner aside, and remove the 7 mm screw inside the joint between the fender and bumper.
   
   
   
4. Remove the front bumper: Carefully release the bumper side tabs from the fenders, lift the bumper, disconnect the marker light wiring harness underneath, and remove the bumper.
   
   
5. Remove the factory headlight bolts: Remove the three bolts securing the factory headlight, including one 13 mm bolt and two 10 mm bolts.
   
   
6. Remove the factory headlight: Press the metal retaining clip, gently wiggle and pull out the factory headlight, then disconnect the main power plug.
   
   

Install the RIGNOX headlights

1. Connect the turn signal adapter harness: Connect the yellow wire harness from the new headlight to the supplied adapter harness for the sequential turn signal function.
   
   
2. Connect and position the new headlight: Connect the main power plug and metal retaining clip, align the new headlight with the mounting position, and loosely install one bolt to hold it in place.
   
   
3. Perform a preliminary function test: Switch the lights on and verify that the startup animation, daytime running lights, and turn signals operate correctly.
   
4. Connect the marker light adapter harness: Connect the supplied adapter harness between the factory marker light plug and the marker light.
   
   
5. Secure the headlights and reinstall the bumper: After connecting all plugs, push the headlights fully back into their original positions and tighten all three mounting bolts. Reconnect the marker light plug, align and reinstall the bumper, then reinstall the fender-side screws, lower shield screws, upper radiator support screws, and wheel-well clips.
   
   
6. Test all lighting functions: Activate each front lighting function and confirm that the new LED headlights operate correctly.
   
   

Electrical and function test

1. Confirm low beam and high beam operate on both sides.
2. Confirm DRL, parking light, amber turn signal, hazard, sequential, and switchback behavior where supported by this product.
3. Confirm startup animation or RGB/app functions only after normal road-light functions pass.
4. Check for dashboard warnings, flicker, or intermittent operation before reinstalling final trim.
5. Verify beam aim after installation so the cutoff is safe and even.

Final check

• All connectors are locked, dry, and routed without tension.
• Included modules or extra harnesses are secured away from heat, water paths, moving parts, and sharp edges.
• Both headlights sit flush with even body gaps and properly seated seals.
• All supported lighting functions pass on both sides.
• No warning lights, flicker, hyperflash, abnormal heat, moisture issue, or loose wiring remains after a short check drive.

Troubleshooting

• One lamp does not turn on: Recheck the main connector lock, related fuse, and battery connection.
• One function does not work: Compare the plug area to the product reference images and verify the connector is fully seated.
• Warning message, flicker, or hyperflash: Confirm the correct product variant was installed and that any included decoder, resistor, or relay is connected and secured.
• Moisture appears: Light condensation right after installation is normal and usually clears within about a week of regular driving as the lamp warms up. If water collects inside or the moisture doesn't clear, contact RIGNOX support.
• Beam pattern is too high or uneven: Recheck lamp seating first, then adjust aim on a flat surface.
• RGB/app feature does not respond: Confirm the product variant supports RGB, the controller has power, and the app/controller pairing has been completed.

Need help?

If the original lamp, vehicle connector, or included harness does not match the product reference images, stop before modifying wiring and contact RIGNOX support with your order number and your vehicle's year, model and trim. We'll walk you through it.

End of installation guide. (c) RIGNOX - All Rights Reserved.