My subs vibrated my driver side mirror loose the houseing isnt loose but its the actual mirror it sellf rattleing and shaking how can i thighten it so it dosnet move???? pleas ehelp

 

Oh i have a 91 RS and can u explain it in idot terms i read the old post i foudn it after i posted this one and dont understand a thing of it lol.. But you can wiggle it with your hand and wacth the thign vibrate at idle it makes me sick and the ratlle sound jsut make sme mad... I knwo what caused it my subs oh joy...