My left turn signal blinks really fast and only the rear bulb blinks, the front bulb is not burnt out. This started as an occasional problem that would go back to normal for a few days and now it seems to be permanently screwed up. Anybody know any thing about this problem or what I need to fix it. Thanks.

 

It blinks fast due to a short somewhere causing high current through the flasher unit. Since the front doesn't work, I'd expect a short somewhere in the wiring to that bulb, or, more likely a corroded shorted socket in front.
Dave