cause this? This started today and I thought it might be a bad bulb.I found that the tail light 10A fuse was blown and all the bulbs are good. I replaced the fuse and all lights function as they should except when the brake is applied. All the brake lights light up, but so does the left turn signal and it just stays on, doesn't blink. I am thinking that it is a ground issue. If this is the case, what is the best way to go about finding the bad ground?