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In-Depth Review of the Trailer Clearance or Side Marker Light w/ Reflector Video

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Info for this part was:

Employee Cole B
Installed by:
Cole B

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Products Featured in this Video


Trailer Clearance or Side Marker Light w/ Reflector - Incandescent - Oblong - Red Lens


Optronics Trailer Lights

4075 reviews


Code: MC31RB

Retail: $9.92

Price:  $3.56
  • Trailer Lights
  • Clearance Lights
  • Marker
  • Oval
  • Surface Mount
  • Non-Submersible Lights
  • Incandescent Light
  • 4L x 2-1/16W Inch
  • Red
  • Optronics



4" x 2-1/16". Waterproof, incandescent trailer light serves as a clearance or side marker light when properly mounted. Built-in reflex reflector. Surface mount to trailer - hardware not included. 1-Wire design. P2 rated. (1) 194 Bulb.


Do you have a question about part MC31RB?more information >     



Today were going to take a look at Optronics Oblong Trailer Clearance and Side Marker Light, part number MC31RB. The lens of this light is reflectorized and D.O.T. compliant. It utilizes a single wire design, meaning you will have one wire lead for your power connection, and it will ground electrically through the mounting hardware used to attach the light. Both the bulb and the lens are user… see more >