My experience is, Flash by Malco is the best product for this job.
Although I have not used Flash on Wilson speakers, I used it on the new Maxxhorn speakers (ultra gloss black) during photo sessions for CES literature and it worked better than any other product we could find (including wax samples sent by the shop that painted the speakers).
Problem with Flash is finding it. It is typically not sold in automotive stores. I have been using it for more than 20 years and always have to search (Google or whoever) to find an automotive dealership or wholesaler who stocks it.
Here are my results for today, good luck with your project.
http://www.flashwax.com/
Although I have not used Flash on Wilson speakers, I used it on the new Maxxhorn speakers (ultra gloss black) during photo sessions for CES literature and it worked better than any other product we could find (including wax samples sent by the shop that painted the speakers).
Problem with Flash is finding it. It is typically not sold in automotive stores. I have been using it for more than 20 years and always have to search (Google or whoever) to find an automotive dealership or wholesaler who stocks it.
Here are my results for today, good luck with your project.
http://www.flashwax.com/