Ok my son had the 420 and on his way home it stalled, could not get it to fire and he said would not roll over. It took me a couple of hours to get to the car and when I put the volt meter on it it had 12.26 volts, I continued to look for trouble spots found none. Hit the key and it rolled over a few time then fired up. I drove it home and noticed that the tack and speedo switch posistions. after a few blocks they were ok but when I placed my foot on the brake they dropped quickly, as if you had jamed on the brakes real hard. The next thing I noticed was the SRS. and the ABS. light and the lamp out lights had a very faint glow to them. I am going to hook up my meter to see if I am dropping in my voltage from the battery, this should tel me if I am dropping power from the alt. or I hope it will.