3S-W - Helmet Installation Sena November 02, 2017 22:09 Follow This video is showing how to install the 3S into a helmet. Have more questions? Submit a request 2 Comments Date Votes 0 Michel Jallut October 22, 2016 16:09 Le tutoriel vidéo pour installer le 3S pas ne de FONCTIONNE PAS ????? 0 Michel Jallut October 22, 2016 16:12 The video tutorial to install the 3S-W does not work Article is closed for comments.