hay guys i have a stock deck in a 89 ultra classic...the volume goes up and down all by it self..seems like it has a speed or noise sensor in it when i get blasting down the road the volume goes up and down... i dont have a manual for it...what are the se and sc buttons for ??? thanks...stujoe

 

now that i have done some digging it has automatic vollume control...tryed playing with the deck but still not having much luck any helpers??

 

nobody has a manual for one of these things...???