Need Tail Lights And Wiring For 5x7 Utility Trailer

Question

Question:

Hello! I recently bought an old trailer from a neighbor for hauling. The cab is. maybe 7x5. I bought a trailer hitch from trailer many years ago for my Mazda CX-5, and just looking for two lights for the back of this trailer to be able to plug into my hitch so that its clear when I am putting the brakes on. I see some of these are clearance lights, etc., and am not the most familiar, but, I just need two red round lights to attach so that someone behind can see, from the back of their little trailer, when I hit the brakes. Just looking for an inexpensive, easy to install, option. Thanks! Greg

asked by: Greg G

0

Expert Reply:

Hello Greg, thanks for reaching out. Really any stop, turn, taillight could work for that purpose. The Optronics LED Trailer Tail Light # STL42RB will be a great option as long as your have a solid surface to mount to. The mounting holes are 4-1/4" apart on center.

To wire them up you will need the Right Angle 3-Wire Pigtail for Optronics Trailer Lights # A47PB. Then to wire the trailer you will just need a 4-way harness like part # A35W42B. This is 35' long so you can cut it down to size for your trailer.

It looks like you did order a 4-flat harness for your Mazda, so that vehicle will already be prepped for the trailer plug. Install the lights and wire up the trailer and you will be good to go. Take a look at the video and article I linked for you below.

Please let me know if there is anything else I can do to help.

expert reply by: Jesse M

0

Jesse M.

9/26/2025

Hey Greg, did you get a chance to install the Optronics LED Tail Lights on your trailer? I'd love to hear how it worked out for you, as it could help others looking for a similar solution.

Reply

Answer 1

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Answer 2

Yes, there is Jeff. We actually have three different 3 prong 3 wire plug pigtails that work with the Miro-Flex LED Trailer Tail Light item #STL29RB, you were looking at. 3-Wire Pigtail for Optronics Trailer Lights - 3-Prong PL-3 Plug - 10" Lead…

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Answer 3

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Answer 4

Hi Cecil; is this light round or oval? I was able to find both when I searched for 9823R-88 so I can't be sure. I don't think we have a direct replacement, but if it is an oval light you could use one like the LED Trailer Clearance or Side…

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Answer 5

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Answer 6

I definitely understand how safety chain capacities and determining exactly what chain rating you need for your trailer can be a bit confusing. To keep it as simple as possible, safety chain requirements state that the breaking strength of EACH…

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Answer 7

It really depends on your setup, if the safety chain loops on your tow vehicle are spaced far apart then you will need more slack to make a tight turn then if they were closer together. What I would recommend you do is connect your trailer to your…

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