Yup, I got the exact same problem few days ago - very embarrasing in front of my co-workers as soon as I would turn the lights on my horn would start going! Short term solution I did - pulled the horn fuse for now. Between my newborn and my work I have absolutely no time to troubleshoot my VX problems. If you find the issue PLEASE let me know.

Thanks!

PS. Good to know that it is not just my VX that is crazy