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Optronics Trailer Lights - Clearance Lights - STL75AB Review

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Review of Optronics Trailer Lights STL75AB


Today we're going to be taking a look at part number STL75AB. This is the Optronics sealed six and a half inch oval LED mid shift intermediate side marker and turn signal light. This does include the supplemental mid shift turn signal. Again, this is an LED system, it's got the built in reflectors here on each side. LED's are going to make great replacements for incandescent lights, they're going to burn brighter, they're going to last longer and they're going to be much more efficient. You don't have to worry about replacing the bulbs and you don't have to worry about brittle filaments.

This particular light is going to feature a sealed waterproof housing and lens unit. The housing and the lens are made from a polycarbonate material. This unit's going to contain nine amber LED's. Here on the back side you can see it's got the three prong connection so this will accept your industry standard three prong plug. If you don't already have one, those are are available here at etrailer.com and they're sold separately. This is designed to be a flush mount.

All you need to do is use a grommet. The grommet's going to be sold separately as well and you can find that here on our website. The overall length of the light measuring from edge to edge is going to give us a measurement of about six and a half inches long. The overall widgth is going to give us a measurement of about two and five sixteenths of an inch and then the depth, measuring form the back of the housing to the outermost point of the lens, that's going to give us a measurement of about two and three quarters of an inch deep. Now, this LED light is going to draw 0.141 amps for the turn signal and 0.060 amps for the side marker function and both of those are at 12.8 volts. It is Department of Transportation compliant and Optronics is going to put a lifetime warranty on the LED's.

We're going to go and hook it up to our external power source, that way you can see what it looks like with power running to it. I have a three prong plug here with us today, so I'm simply just going to take it and line up my prongs with the plug here at the back of the housing. Once I get all those lined up, simply just push the plug down. It seats really nice, creating a nice tight seal. You can see here that it's going to have the nine diodes sending out a really nice strong consistent signal. The LED's along with the multi diode design is really going to optimize our light output.

You can see how it brightens up when we activate the turn signal and again, this light is going to function as a mid shift intermediate side marker light as well as it's going to include the supplemental mid shift turn signal. That's going to do it for today's review of part number STL57AB, this is the sealed six and a half inch oval LED trailer light from Optronics. .


Info for this part was:

Employee Cole B
Installed by:
Cole B

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