Off to the right side is best. You can squeeze it between your highbeam indicator and odometer. Don't get it to close to the wheel if you are going to use a hood like the Prosport comes with. Mine is on the back section of the column slightly hanging over the lip where it drops down into the dash.
i put mine on my steering collum its perfect, only blocks the seatbelt light, my freind put his on the dash now he wishes he would have put it where mine is