1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Maxxima M85417R Red LED Ultra Thin Round Hybrid Stop Turn Tail (STT) and Back-Up Light. Please read this manual thoroughly before installation and use to ensure proper function and safety. Retain this manual for future reference.
2. Product Overview
The Maxxima M85417R is a versatile LED lighting unit designed for vehicles requiring combined Stop, Turn, Tail (STT) and Back-Up light functions. It features 9 white LEDs for back-up lighting and 12 red LEDs for STT functions, all within an ultra-thin, round design. This light is suitable for various applications including trailers, trucks, RVs, and Jeep Wranglers.

Figure 2.1: Front view of the Maxxima M85417R light, showcasing the red STT LEDs in the center and white back-up LEDs on the outer ring.
3. Features
- Integrated STT and Back-Up Functions: Features 9 white back-up LEDs on the outer ring and 12 red stop, turn, and tail LEDs in the center.
- Compact Design: With a 5.5-inch diameter and an ultra-thin 0.5-inch depth, this light offers a low-profile installation.
- Durable Construction: Equipped with a polycarbonate lens and a neoprene gasket for enhanced moisture resistance and longevity.
- Easy Installation: Designed for flange mounting and includes necessary mounting screws and screw caps.
- DOT/SAE Compliant: Meets J1398, J585e, J1935, J593c standards, ensuring road safety compliance.
- Patented Lighting Optics: Incorporates advanced optics for optimal light distribution and visibility.
4. Package Contents
Verify that all items are present in the package:
- 1 x Maxxima M85417R Light Unit
- Mounting Hardware (screws, screw caps)
- 1 x Neoprene Gasket
5. Setup and Installation
5.1 Safety Precautions
- Always disconnect the vehicle's battery before beginning any electrical installation to prevent electrical shock or damage.
- Wear appropriate personal protective equipment, such as safety glasses.
- Ensure the installation area is clean and free of debris.
5.2 Mounting Instructions
- Select a suitable flat mounting surface on your vehicle or trailer. The light requires a 1-inch diameter hole for the wiring to pass through.
- Position the light and mark the locations for the mounting screws. The light features a flange mount design.
- Drill pilot holes for the mounting screws and the central wiring hole.
- Place the included neoprene gasket between the light and the mounting surface to ensure a sealed, moisture-proof installation.
- Secure the light using the provided mounting screws and screw caps. Tighten screws evenly to avoid distorting the light housing.

Figure 5.1: Angled view of the light, showing the integrated wiring harness for connection.

Figure 5.2: Side profile of the light, illustrating its ultra-thin design for flush mounting.

Figure 5.3: Rear view of the light, showing the wiring exit point and the neoprene gasket.
5.3 Wiring Connections
The Maxxima M85417R light comes with two 10-inch wires featuring female PL-3 pigtails. Connect these wires to your vehicle's electrical system according to the following general guide. Always consult your vehicle's specific wiring diagram for accurate connections.
- White Wire: Connect to vehicle's chassis ground.
- Black Wire: Connect to vehicle's tail/running light circuit.
- Red Wire (from 3-wire plug): Connect to vehicle's brake/turn signal circuit.
- Red Wire (from 2-wire plug): Connect to vehicle's reverse light circuit.
Note: The ground wires for both light circuits are typically shared. Ensure all connections are secure, properly insulated, and protected from environmental elements.
For some vehicles, particularly those with older incandescent flasher relays (e.g., certain Jeep Wranglers), installing LED lights may cause 'hyper-flashing' of turn signals. This occurs because LED lights draw less current. To resolve this, an LED-compatible flasher relay or load resistors (not included) may be required.
6. Operating Instructions
The Maxxima M85417R light operates automatically in conjunction with your vehicle's electrical system:
- Tail Light Function: When your vehicle's headlights or parking lights are activated, the red LEDs will illuminate at a lower intensity, serving as tail lights.
- Stop Light Function: When the brake pedal is pressed, the red LEDs will illuminate at a higher intensity, signaling braking.
- Turn Signal Function: When the turn signal lever is engaged, the red LEDs will flash to indicate a turn or lane change.
- Back-Up Light Function: When the vehicle is shifted into reverse, the white LEDs on the outer ring will illuminate, providing clear back-up lighting.

Figure 6.1: The Maxxima M85417R light shown with both red (STT) and white (back-up) LEDs illuminated.
7. Maintenance
To ensure optimal performance and longevity of your Maxxima M85417R light:
- Cleaning: Clean the lens regularly with a soft cloth and mild soap and water. Avoid using abrasive cleaners or solvents, as these can damage the polycarbonate lens.
- Inspection: Periodically inspect the light for any physical damage, cracks in the lens, or loose wiring connections.
- Gasket Integrity: Ensure the neoprene gasket remains properly seated and intact to maintain its moisture-proof seal.
8. Troubleshooting
- Light Not Functioning:
- Check all wiring connections for proper contact and ensure they are securely fastened.
- Verify that there is power supplied to the light's circuit.
- Inspect the vehicle's fuses related to the lighting system.
- Turn Signals Hyper-Flashing:
- This is a common issue when replacing incandescent bulbs with LED lights due to lower current draw.
- Install an LED-compatible flasher relay or appropriate load resistors (not included) into the turn signal circuit.
- Moisture Inside Lens:
- Ensure the neoprene gasket is correctly positioned and not damaged.
- Verify that all mounting screws are tightened evenly to create a proper seal.
9. Specifications
| Attribute | Specification |
|---|---|
| Brand | Maxxima |
| Model | M85417R |
| Dimensions (Diameter x Depth) | 5.5 inches x 0.5 inches (approximate) |
| LED Count | 12 Red (STT), 9 White (Back-Up) |
| Lens Material | Polycarbonate |
| Lens Color | Red and Clear |
| Mounting Type | Flange Mount |
| Compliance | DOT/SAE J1398, J585e, J1935, J593c |
| UPC | 755183174818 |
10. Warranty and Support
The Maxxima M85417R Red LED Ultra Thin Round Hybrid STT and Back-Up Light is covered by a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For technical assistance, warranty claims, or any questions regarding your product, please contact Maxxima customer service. Refer to the product packaging or the official Maxxima website for current contact information.





