At first i was like Screw you guys, I'm not you. But i installed that **** thing and It did not make anything better. It is only good for voltage readings if you ask me. And i have to let my seat down to see those. Maybe i don't know how it is without it on, but if i had it to do again I wouldn't have. got it. I could have took that extra i spent on it and put it towards a HU with bluetooth or some tweets. I'm not sure how much some people's cars lights dim, but i can see mine a little when the bass hits.