The last few times I have rode my bike to work, I have noticed a rattling noise coming from the rear. It seems to be coming from the rear fender area, maybe around where the right side turn signal is mounted. I have tried to reach back while riding and stop the noise but the problem is that it really rattles when I am on the throttle. As soon as I let go of the throttle, the rattle stops. This causes a problem trying to reach back since I have to let my right hand off the throttle in order to try to feel around back there.
I tried to wiggle and move some stuff when the bike is stopped, but nothing seems loose. It is not something that will deter me from riding, but it just gets on my nerves after a while.
Any ideas?