Partsam For 1999-2013 CHEVY GMC SIDE MARKERS LED Fender Lights in SMOKED Black Lens for Heavy Duty Sierra Silverado Dually Bed Trucks 264133BK (4 Four Piece Pc Set Kit) 99 00 01 02 03 04 05 06 07 08 4 pieces (2 pieces with Amber LED lights for front and 2 pieces with Red LED lights for rear); Powered by 3 pieces super bright Flux LED lights inside Come with 168 194 adapter and double sided tape for easy installation; Replace Part # 264133BK Fits Chevy Silverado or GMC Sierra 2500 3500 HD with existing amber/red lens side markers, but this product will also fit any other truck with some mods and wiring required For 2001-2007 GMC Sierra 3500 / 2008-2012 GMC Sierra 3500HD Side Marker Fender Marker Lamps; For 2001-2007 Chevrolet Silverado 3500 / 2007-2012 Chevrolet Silverado 3500HD Side/Fender Marker Lamps Dimension: about 81.0 x 38.5 x 19.5mm ; Note :If the LED does not light up, simply flip it 180 degrees (reverse the polarity) or If the Fender Markers don't fit your stock sockets, please cut the connectors off for wiring. It all started in the summer of 2013 with a simple, with bold idea: make better auto parts. In other words, not just a better auto parts - a better way of doing things. A new kind of auto company that works hand in hand with users to do something amazing, something meaningful. Now PARTSam has grown tremendously to become one of the leading platforms of e-Commerce in the aftermarket auto parts industry. Inventory Management/Warehouse &amp; Fulfillment  With our warehouse located in Milpitas, California, we take care of the inventory management for our products. This saves manufacturers space, time, and headache. Automated Multi-Channel Sales  We successfully advertise our products on multiple platforms and maintain top-rated healthy seller accounts, which keep customers drawn to our products. We are continually expanding our customer base as we add more sales channels. Professional Seller - Customers will deal directly with us in regards to issues and concerns they experience with the products. Manufacturers will not have to deal directly with the individual customers, but will experience the benefits of their business, which is the typical win-win cooperation. Peel one side of the double tape and then put into your LED Marker; Connectthe wires with your stock wire; If the LED doesn&#039;t light up, pls raise up the metal pin and flip LED over 180 degree to change polarity; Peel the other side, plug the marker directly to your original socket; Red light: function as rear fender marker Amber light: function as front fender marker