i just bought an 89 grand marquis. everything on it seems fine until tonight im driving it home and i was shifting gears to see if they all worked and when in overdrive lockout it makes a soft static-like noise which i can only hear inside the car. i know nothing of these types of cars and have no clue what it could be. it drives just fine in overdrive lockout. also my borther had the ebreak on and drove in reverse now there is a scrubbing sound when im driving....any ideas what it is? one more thing... is the speedometer supposed to light up so i can see how fast im going?? if it is maybe i have it turned off? how do you turn it on. any help for a newb is much appreciated.