Trailer Lighting: what Claude and GPT would buy
Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.
Claude and GPT choose the same brand, Optronics
In Automotive, Claude and GPT choose the same brand in 60 of 112 categories.
Claude Opus 5.5 · October 27, 2026
Optronics (brand)
Optronics sells sealed, submersible LED trailer light kits that suit both utility and boat trailers.
Not for: Owners matching an exact OEM lamp on a specific RV, and anyone who needs a temporary tow light for a disabled vehicle.
GPT 6.1 Sol · November 10, 2026
Optronics STL22RB
Sealed LED construction and combined stop, turn, and tail functions make this a practical replacement for compatible oval trailer lights.
Not for: Trailers requiring rectangular lights or a complete lighting and wiring kit.
Which one fits you
marker and clearance lights
Peterson Manufacturing Piranha (line)
Compact sealed LED marker lights widely used for trailer clearance and side marker positions.
Not for: Those replacing combination stop/tail/turn lamps.
Check before you buy
Where to find Optronics
- Walmart
- Defender
- Southwest Wheel
Shops seen in search results on November 5, 2026. A shop missing here may sell it too. Nothing was checked by a person.
Brands that matter
- Optronics: Broad range of LED trailer lights and kits.
- Peterson Manufacturing: Long-established trailer and truck lighting maker.
- Grote: Commercial-grade truck and trailer lamps.
- Wesbar: Common on boat trailers, including submersible lamps.
- Blazer: Budget lighting kits and magnetic tow lights.
What to avoid
- Incandescent lamps on boat trailers
- Lamps without DOT or SAE markings
- Relying on the ball hitch for the trailer ground