It does block out the light which is why I put in the super bright PIAA's. They light up the road enough that I dont have to remove them. I also did the driving light mod so I can use the driving lights without the headlights on.
99' Silver Frost SVT 18" Racing Hart C2's Color matched Headlight covers Ding guards removed Custom intake B&M Short Shifter Koni's and Ground controls NGK Iridium plugs