Review on ModifyStreet AlphaRex PRO-Series Black Fit 07-13 GMC Sierra 1500/07-14 Sierra 2500HD/3500HD LED Tube Dual Projector Headlights With Switchback DRL/Sequential Signal/Activation Light by Cameron Kennedy

I bought these to replace some other after market headlights I had on my truck because I didn't like the output from the projectors. It was very scattered light with a lousy pattern.These have been a huge improvement. I have a 6k HID kit installed and they are very bright. With a nice clean cut off. I was worried about the bixenon aspect of these because I typically prefer a separate high beam but the high beam output on these are very bright. I wish the DRL was a little brighter but it's not horrible. The lights are plug and play aside from the drl wiring. I ran the provided wiring across my lower radiator support and routed it up and into my fuse box. The DRL lead for my 08 duramax is under the fuse box in the hood. Flip up the two grey latches to release the top of the fuse box and the closest module to the battery has the DRL circuit on a blue wire. The gas trucks may be different. I cut the blue wire and connected the grey lead from the DRL wiring kit to the blue wire and it works perfect. Time will tell how these will hold up, but so far I'm pretty happy.