sometimes the vss plug gets correded. pull the plug....take the white insert out with needle nose pliers.....then take a paper clip and lift up on the plastic tab holding the wires into the black vss plug. look for green oxidation...rust....or anything of the liking. either clean the metal tabs....or go to bone yard/junk yard and find a new or less rusty vss clip. small enough where it could fit in your pocket.....not saying you should take it or anything...lol i just payed 20 bucks for a stock 89 accord radio deck so i guess this is my way of paying those junkyards back. oh yeah...the display was cracked too...and i pulled it.