What Type of Connector is on Miro-Flex LED Trailer Side Marker Light OPT78FR
Updated 10/27/2025 | Published 03/08/2025 >
Question:
I need the trailer side connector for this light. What is the part number for it or model? Does e-trailer sell it?
asked by: Juan M
0
Expert Reply:
Hey Juan, we don't carry the matching connector for the Optronics trailer light part # OPT78FR but you can source it pretty easily online if you look for a Delphi 3 prong connector. I believe the part number is 320403.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Miro-Flex LED Trailer Side Marker Light and Mid-Ship Turn Signal - Submersible - Amber Lens
- Trailer Lights
- Clearance Lights
- Marker
- Turn
- Oblong
- Surface Mount
- Submersible Lights
- LED Light
- 6L x 2-1/4W Inch
- Amber
- Optronics
more information >
Continue Researching
- Video: Breaking Down the Miro-Flex LED Trailer Side Marker Light and Mid-Ship Turn Signal
- Video: Comprehensive Review: LED Mid-Ship Turn Signal and Side Marker Light
- Shop: Miro-Flex LED Trailer Side Marker Light and Mid-Ship Turn Signal - Submersible - Amber Lens
- Shop: Optronics LED Side Marker Light and Mid-Ship Turn Signal - Submersible - 9 Diodes - Amber Lens
- Shop: Sealed, 6-1/2" Mid-Ship Turn Signal and Side Marker Light - Amber
- Shop: GloLight LED Side Marker Light and Mid-Ship Turn Signal - Submersible - Oval - Amber Lens
- Shop: LED Mid-Ship Turn Signal and Side Marker Light - Submersible - 10 Diodes - Amber Lens
- Shop: RV Covers
- Search Results: rv dinette table
- Q&A: Does Miro-Flex LED Trailer Side Marker Light Need Connector
- Shop: Adco SFS AquaShed RV Cover for Toy Hauler Travel Trailers up to 24' Long - Gray
- Shop: Adco RV Cover for Travel Trailers up to 24' Long - Tan
- Article: Trailer Lighting Requirements
- Q&A: Possible Light Replacement For Monarch 5129 On 1977 Great Divide Trailer
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Article: How to Measure for Travel Trailer and Fifth Wheel Steps
- Q&A: Recommended Equalizer Kit for Tandem Axle Trailer with 13-104-02 Equalizers
- Q&A: Converting Standard 7K Grease Hubs to Oil Bath Hubs
- Q&A: Electric Brake Compatibility on a Boat Trailer
- Q&A: How to Power Enclosed Trailer Lights with Auxiliary Battery
- Article: Trailer Tire Sizing
- Q&A: Best Replacement for Atwood RV Water Heater GC10A-3E
- Article: Trailer Wiring Diagrams
- Article: How to Measure Your Trailer Wheel Bolt Pattern


Jameson C.
10/27/2025
Hey Juan, were you able to find the Delphi 3-prong connector for your Optronics trailer light? Knowing what worked could help someone else trying to match that same light.