Weird prob- video attached

[jgmachine]

Ok guys- strange problem. My turn signal just stays on... If I eliminate the load by turning off the lights, it works fine. I thought it may be the battery, so I replaced it with no luck. The problem comes and goes. Sometimes it is fine. I just made the 30 second video to show...

Could it be a bad ground? If so where would it be? It is only the left turn signal that does this.

http://www.youtube.com/watch?v=uR9t3midONc&sns=em

Thanks so much....