These are the original LED BED Roll Lights for Chevy & GMC trucks, designed by me. Beware of copycat lights that don't contain all the components my lights have. Just look at the number of lights sold.

This is a pair of 12 Volt red LED Bed Roll lights for 1947 - 1954 Chevy pickups, and others with a nominal 1-5/8" round bed roll opening (fits openings from 1.560" to 1.715"). I had a customer who installed a set of these lights in his 1960 Chevy truck bed, and he said "they fit perfectly".  They may fit all Chevy truck beds from 47 up through 87, as well as Oldsmobile trucks found overseas. Measure your truck's Bed Roll to be sure. They have Red DOT approved lenses, feature 3 Super Bright Sealed Red SMD LED's with two brightness levels for Brake/Signal and Tail Lights.  The lights are mounted inside  special adapters to fit the Chevy pickup bed roll perfectly. 

Beware of Imitations.

I have recently had customers who purchased new reproduction beds made by MAR-K Specialized Mfg. out of Oklahoma & sold by American Classic Trucks, and from The Truck Shop in California with 1-1/2" bed roll openings.  I can supply the lights to fit the 1-1/2" bed roll opening (eBay item 192758616669).  Measure your bed carefully to insure you receive the proper lights for your truck.

Check out my other eBay items for classic trucks.  If you don't see what you are looking for when it comes to lights for your truck, let me know.

UPDATE: Several of my customers have installed Bed Roll Lights in the front of the bed rolls facing the back of the cab.  They are using the Amber LED's as signal lights only (in addition to the rear bed roll brake and signal lights).  The Amber signals are visible from the side (similar to signal lights in the mirrors of newer trucks), and they light up the back corners of the cab when the signals are activated.  I have Amber LED's available in all bed roll sizes.