i got a problem. i have an old deck given to me when i bought the car. ita a cheap sony 35watt EXCD-206. the harness in the back that slips into the deck wasnt there, but all the other wiring was. so i out one that fit on. the deck worked. all wires that i cut an connected matched except the dimmer. had no dimmer wire to connect to on the deck piece. so i taped the end. it plays when im standing still an if the road is as smooth as glass, but when i hit the smallest bump or shift anywhere near 3500+ rpm the deck sounds as if it skiped. then it will throw the old ER-04 an eject the cd. fuse is good an right ampage, so what could it be? wn the car is an 1987 prelude.