Not worth the money, also not exactly safe to use.
July 10, 2017
Reviewer:
Anonymous Person from Bay Area, CA United States
It's basically a $6 GM brake light socket with a $2 Sylvania bulb and a cheap wiring harness that requires wire splicing to install (horrible idea for long term use) That's all you're getting, and it costs $70.
But ignoring how cheap the parts are, as far as I'm concerned this thing is actually dangerous. Within about 30 seconds of being illuminated in fog light mode, the bulb will be so hot to the touch it will instantly burn your hand. The heat generated from it will melt the inside of the OEM 4th brake light housing and it's own plastic bulb socket over time. Every time I remove the light to re-seat it from coming loose, tons of plastic bits fall out every time because they melted off and then dried hard again. It comes loose from melting its own hole larger and larger. Good thing they sent me two by mistake because the first one melted itself and fell out, dragged itself on the pavement and broke.
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4th Brake light kit
July 10, 2014
Reviewer:
Gene O'Donnell from Fort Wayne, IN United States
Received the kit this afternoon. Install was fairly simple and it looks awesome. :)
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Product
May 31, 2014
Reviewer:
Gator from Enterprise, AL United States
Everything about this product from purchase to installation was great.
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Should have come this way from the dealer!
May 11, 2014
Reviewer:
Ricardo from Houston, TX United States
4th Brake light looks great. The install was pretty straight forward and took about 2 hours to get it done from start to finish. It helps having a friend that knows what he's doing.
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1 of 1 people found the following review helpful:
Quick and easy install... Except the drilling!!
February 4, 2014
Reviewer:
Michael Harris from Langhorne , PA United States
The product looks and works great. The wiring was color coded and very simple to do. The only complaint I have is that I feel the kit should have came with a template of some sort to make it easier and cleaner to cut the hole. Also, definitely take the assembly out before working on it.
Not worth the money, also not exactly safe to use. 
4th Brake light kit 
Quick and easy install... Except the drilling!!