If you're buying the Oracle Flush Style LED Tail Lights for the 2021+ Ford Bronco, the single most important thing you need to know before ordering is which version of tail lights your Bronco has from the factory. Getting this wrong means buying the wrong part number.

Here's exactly how to check, what the difference means, and what you need to do for each.

How to Tell If Your Bronco Has Halogen or LED Tail Lights

Ford equipped the 2021+ Bronco with either halogen or LED tail lights depending on the trim level and options package. There are two easy ways to check which one you have.

Method 1: Door Jamb Sticker

Open the driver's door and look at the sticker on the door jamb (the edge of the door opening, near where the door latches). This sticker lists your build codes and options. Look for a reference to LED lighting or exterior lighting packages. If you see mention of LED taillamps or a premium lighting package, you have LED tails.

Method 2: Visual Inspection

Stand behind the Bronco and look at the tail lights directly. Factory LED tail lights have a distinctive horizontal lightbar strip running across the lens. Halogen units have a more traditional bulb-behind-lens appearance with a clear or amber turn signal section. If you can see a defined strip of light when the lights are on, you have LED.

The Part Number Difference

Once you know which tail lights you have, the part number decision is straightforward:

• Halogen Broncos - Oracle part number 5892-504. These are plug-and-play with the factory halogen wiring harness. No software changes needed.
• LED Broncos - Oracle part number 5892-023. These require a FORScan module configuration change before the lights will function correctly. Without it, the truck's body control module won't know how to handle the new signal mapping and you'll get fault codes and incorrect light behavior.

What Is FORScan and Why Do You Need It?

FORScan is a Windows-based diagnostic software specifically designed for Ford, Lincoln, and Mercury vehicles. Unlike generic OBD2 scanners, FORScan can read and write module configurations that Ford technicians use, including the body control module (BdyCM) settings that control how your tail lights behave.

You'll need a compatible OBD2 adapter (FORScan recommends the OBDLink EX) and a Windows PC or laptop. The software itself is free for basic use.

FORScan Settings for Oracle LED Tails on an LED-Equipped Bronco

Once you're in FORScan and have connected to your Bronco, navigate to the BdyCM Module Configuration. You need to change the following settings:

• Rear LED Turn Outage: Set to Disabled
• Right Rear Stop and Position Lamp Usage: Set to Stop and Turn
• Right Rear Turn Lamp Usage: Set to Not Used
• Left Rear Stop and Position Lamp Usage: Set to Stop and Turn
• Left Rear Turn Lamp Usage: Set to Not Used

These changes tell the body control module that the combined stop/turn lamp on each side will handle both functions, which is how the Oracle flush tail lights are wired. After saving, clear any stored fault codes and test the lights through all functions: park, brake, left turn, right turn, and reverse.

Installation Overview

The physical installation is straightforward on both versions. The Oracle flush tail lights are designed as direct replacements for the factory assemblies. Remove the factory tail light (typically 3-4 bolts accessed from inside the cargo area or tailgate), unplug the factory harness, plug in the Oracle harness, and secure the new assembly. The whole process takes about 30-45 minutes per side.

For LED Bronco owners, do the FORScan changes after the physical install so you can verify everything works in one session.

Frequently Asked Questions

What happens if I install the LED version tail lights without doing FORScan?

You'll likely see fault codes related to the turn signal circuit and the lights may behave incorrectly, for example the turn signal may not function as expected, or you might get a rapid flash (hyper-flash) and a warning light on the dash. It won't damage anything permanently, but the lights won't work right until you complete the FORScan module changes.

How difficult is FORScan for someone who's never used it?

It's approachable if you follow the instructions. The FORScan software walks you through connecting to the vehicle, and the module configuration screen lets you search for specific settings by name. Budget about an hour for your first time, including reading the Oracle instructions and making the changes. Many Bronco owners have done this with no prior experience.

Will Oracle flush tail lights fit the Bronco Raptor?

No. The Bronco Raptor has a different rear end configuration and these lights are not compatible. They're designed for the standard 2021+ Ford Bronco in both 2-door and 4-door configurations.