Replacement Tail Light for a Optronics ST-37 LH
Updated 02/03/2026 | Published 06/26/2024
Products Featured in This Question
Question:
I am trying to find a direct replacement for Optronics ST-37 LH. The ones on my boat trailer are incandescent and have a molded triangle shaped plug.
asked by: Terry W
Expert Reply:
The direct replacement for your Optronics ST-37 LH is the Aero Pro Combination Trailer Tail Light Driver's Side item # ST37RB and passenger side item # ST36RB. These do not have a molded triangle shaped plug so yours must have had that adapter added. It would be easy to swap the connector out when you replace your lights. You'll want to use the Deka Heat Shrink Butt Connector item # DW05744-5.
If you're interested in upgrading to the LED equivalent then the correct replacements would be the item # STL36RB and item # STL37RB.
Product Page this Question was Asked From
LED Tail Light for Trailers Over 80" Wide - 7 Function - Submersible - 17 Diodes - Passenger
- Trailer Lights
- Tail Lights
- Brake/Tail/Turn
- Marker
- Rectangle
- Surface Mount
- Submersible Lights
- LED Light
- 8L x 3W Inch
- Red
- Optronics
more information >
Continue Researching
- Shop: LED Tail Light for Trailers Over 80" Wide - 7 Function - Submersible - 17 Diodes - Passenger
- Search Results: 2 inch winch strap
- Search Results: 2 inch boat winch strap
- Search Results: boat trailer winch strap
- Search Results: utility winch trailer winch
- Search Results: split reel winch
- Shop: LED Tail Light for Trailers Over 80" Wide - 8 Function - Submersible - 23 Diodes - Driver Side
- Search Results: st 37 lh
- Search Results: dismount code fbf99
- Video: Comprehensive Review: Hand Winch Cable with Safety Hook 1/4" Diameter x 50' Long
- Video: BoatBuckle Boat Winch Strap with Latch-Lok Hook Spec Review
- Video: An In-Depth Look at the CE Smith Carpeted Johnboat Bunk Board for Boat Trailers
- Video: A Closer Look at the BoatBuckle Boat Winch Strap with Hook and Safety Latch
- Shop: Hand Winch Cable with Safety Hook 1/4" Diameter x 50' Long - 3,500 lbs
- Q&A: Replacement Trailer Taillight Lens with SAE STIAP2 04 DOT DOT Number On It
- Video: Review of CURT Steel Winch Cable With Hook 25 Foot - C52ZJ
- Video: Titan Chain Screw Pin D-Shackle Review
- Shop: Hand Winch Cable with Safety Hook 7/32" Diameter x 50' Long - 2,500 lbs.
- Shop: Winch Pulley Block with Hook, 8K
- Q&A: Comparing Dutton-Lainson Hand Winch DL10976 and DL10954
- Shop: Dutton-Lainson Hand Winch - Worm Gear - Split Reel - 2,000 lbs
- Shop: Dutton-Lainson Hand Winch - Worm Gear - Split Reel - 1,500 lbs
- Q&A: Replacement LED Lights for Optronics Tail Light ST37
- Q&A: Matching Left Hand Side Light to Go with Trailer Light # STL36RB
- Q&A: Looking for LED Version of Optronics ST36RB Trailer Taillight
- Q&A: Replacement Trailer Lights for Boat Trailer With Optronics ST36/37 Series Lights
- Q&A: Replacement Lens for Optronics ST-36-RH Tail Light
- Video: Comprehensive Review: Dutton-Lainson Hand Winch
Jerred H.
2/3/2026
Hey, how did the replacement tail lights work out on your boat trailer? Were you able to swap the connector easily when you installed them? Your update could make it easier for others replacing the same Optronics lights.