ugp

You say it makes a buzz when you turn the key? Are you sure you dont mean when you hit the starter button? If so, and with the lights fading, its a battery issue. The buzz is because the battery doesnt have enough joice to hold the starter solenoid open, letaknown turn the motor. What type of battery is it? Is it fully charged (doesnt sound it)? Also if its an acid battery did you fill it correctly with acid and leave it on trickle charge for a while?

My sv does this at the moment, batterys shagged, I just jump from a car.