Brighter lights won't help much if you've gone pretty dark on the tint. I have no problem backing up with the window tint that's on mine, 35% on the rear windows. You have to realize the percentage the tint is is what amount of light it lets through, 20% means it allows only 20% of light through it, and the lower the number the less amount of light allowed through. You might just have to get use to using your mirrors and rolling down the windows to see more, I've done this with the S10 I own, had limo tint done on the rear window and the extra cab windows but it made it hard to see at night while backing up so I resort to using my outside mirrors or rolling down the window and sticking my head out to look. But since I drive tractor-trailers I'm use to using mirrors and looking behind me from the drivers window.