What he said! ^^^
Also make sure you get the harness with the lights.
I-CAR Platinum Certified Autobody Technician
ASE Master Technician Certified
'08 Silverado LTZ CCSB : RCD 6" lift, bilstein 5100, 20x12 rbp rims with 35/12.5 Toyota Open Country M/T 4" turbo back, Efi Dsp5 by IdahoRob thanks to http://www.dmaxstore.com/
****SOLD*****'04 GMC Sierra SLT CCSB: K&N Intake, PPE Boost Valve, 5" DP back. Load Leveling Bags, Lift Keys, Silverado taillights, 18x9 Black Rhino Rockwells-275/70 BFG Rugged Terrain.