What Type of Connector is on Miro-Flex LED Trailer Side Marker Light OPT78FR

Question

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

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.

Answer 1

You would not actually need a connector because the Miro-Flex LED Trailer Side Marker Light and Mid-Ship Turn Signal - Submersible - Amber Lens #OPT78FR comes with its own connector, a Delphi plug, already attached. If your trailer doesn't have a…

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Answer 2

Hey Doug, That's a good question because fit is really important so the cover stays snug on your trailer, and there is a specific way to measure for the etrailer covers. It's pretty simple, and what you want to do is measure the body of the…

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Answer 3

To determine the correct size RV storage cover for your Coleman Lantern LT Travel Trailer you'll need to measure the body length. In the attached picture below you'll see exactly how to measure. Once you have this measurement you can choose…

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Answer 4

Hey Daniel, thanks for reaching out. Yes, we do have a wiring harness that will allow you to add a 7-way to the bed of your 2018 GMC Sierra 2500. For the 6-1/2' bed I recommend the following: - Mighty Cord 5th Wheel/Gooseneck Wiring Harness w/…

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Answer 5

Hey Tim, of the available RV covers I would recommend the etrailer part #e37VV for your Rockwood Minilite that is 26 foot long for something that is easier to install and provides great protection. How much snow do you guys usually get?

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Answer 6

I checked with Dexter and you will need to tighten the attachment nuts to 30-35 ft-lb when installing the 12 inch Electric Brake Assembly, item #23-105, to your Dexter 6000 lbs axles.

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Answer 7

For a 1 inch lift we have found that in most cases there is no need for any spacer adapters for the Firestone Ride Rite kits like part #F2445. If a spacer was needed for such a small lift Firestone would have one available.

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Answer 8

The roller sits loosely enough on the 5/8 inch shaft that it will spin easily, but not so loose that it's sloppy. If you needed a replacement shaft, a 13-5/8 inch long shaft is available as part #CE10727A. It includes two pal nuts.

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Answer 9

Yes the CE SMith Deep V Keel Roller part #CE10455G that you referenced will help center your boat as you pull it up on the trailer. The 12 inch version would not be overkill. Using two of these like what you see in the picture I attached will do a…

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Answer 10

I recommend taking a look at the Taskmaster 5.30R12 Radial Trailer Tire - Load Range C Item #TT53012C and pair it with the Taskmaster Steel Modular Trailer Wheel - 12" x 4" Rim - 5 on 4-1/2 - Silver Item #TA79RR. This is an excellent radial…

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Answer 11

Based on the part number you mentioned the correct replacement circuit board is the part #MA10A21275K.

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Answer 12

Thanks for the picture! The closest replacement we have for your Monarch 5129 Lights on your trailer is the Triple LED #CE44VR. This light measures 14" x 6-7/8" so it should completely cover your old mounting holes, though it's going to…

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What Type of Connector is on Miro-Flex LED Trailer Side Marker Light OPT78FR

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