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Bracket and wiring for Optronics Trailer Clearance or Side Marker Light MCL165AB  

Updated 04/14/2026 | Published 04/06/2026

Question:

Where can I find the part number for the matching 2 wire base this light attachs to, please?

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Expert Reply:

Thanks for reaching out Robert, I did some digging and here's what I found.

Optronics bracket # A65PB is a single wire design that grounds through the mounting hardware. I checked through Optronics for the 2 wire to find that it's been discontinued.

Optronics # MC44AB trailer side marker light is a 2 wire alternate option.

What kind of trailer are you replacing this light on; boat, utility, travel trailer?

expert reply by:
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James D
Kevin profile picture

Kevin

4/14/2026

You’ll need some small countersunk screws to mount that base. If the screw head is too “tall” the lights will not snap into the base properly. Would be nice to include a specialty sheetmetal screw with the base.

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