I read the one bad review above and sounds like that guy must have been a jerk that is why they didn't help him, and I am a retired inspector and there is no way the problem discribed above could be caused by the hookup, the electric doesn't even work if it is not hooked up right unles you hit an override switch and there would be a huge explosion in that case. My family has taken our cars to Roger for years! Once my neighbor took his car to another place and got an estimat of $1500 to fix his van, I told him to take it to Roger's and the problem was just a $45 fix! Now he wont go anywere else! This is the place to go if you don't want to get ripped off in this town!