Replacement Lens and Side Marker Light Options for 2.5 Inch Round Optronics RV Marker Lights  

Question:

Expert Reply:

Rey, I completely understand wanting to get the correct replacement the first time because with RV marker lights, even a small difference in diameter, wiring style, or reflector design can turn a simple swap into a frustrating rewiring project.

Based on your description, I actually think you may be using the Optronics LED Clearance or Side Marker Trailer Light with Reflector part # MCL0040RBB since you mentioned the built in reflex reflector and the red lens style. If this is the correct one, you can simply replace the lens with part # OPT79NR. Easy peasy! The light part # MCL0040ABB that you were looking at is the amber version of this with the reflector and that replacement lens would be part # OPT69NR.

That light is a 2.5 inch round flat face LED marker light with the built in reflector and is commonly used on RVs for rear or side marker applications. If the housing or wiring is damaged, replacing the full assembly is usually the easiest option and helps make sure the brightness and reflector visibility stay consistent.

If you can send over a quick photo of the current light or the back side of the assembly, I can help confirm it before you order so you do not end up dealing with different mounting styles or connectors.

expert reply by: Heather A

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Jesse

5/29/2026

I bought this product to replace my old incandescent clearance lights. This was an easy install with the Optronics Led clearance lights.

Heather A.

5/29/2026

@Jesse Love to hear that Jesse! It's always nice to hear from someone that has used the product in the real world.

David H.

5/29/2026

I purchased this amber side marker light to replace one that failed on my Forest River travel trailer. It mounted easily and I just used a butt splice to connect to the trailer wiring. Easy and quick replacement.

Heather A.

5/29/2026

@DavidH Awesome David, thank you for sharing your experience. Which Forest River do you have? how do you like it?