Annoying ticking sound while driving.

I'm still thinking, altho, there have been many great possibilities mentioned.
I know I have heard that sound, but my brain is just not remembering where. I'll give it time, cuz sometimes my brain is working on solutions to problems I never knew I had.
Haha, no problem. I very much appreciated all the responses I have been getting here. I definitely have some new things to look into. Unfortunately some stuff came up this weekend so I didn't get a chance to look into anything yet but the weather looks good this week so I should have plenty of time soon.