** Polaris 400 HO Blowing Main Fuse w/ Boss Tube, Can i go to 25?

OK guys …
I ended up giving the wife my Polaris 400 HO and she MUST have a BOSS MUSIC TUBE that connects to cigg lighter in headlight pod.

BUT after about 45min a hour it blew the main fuse. The fuse is a 20 and i am curious if i should risk putting a 25?

Has anyone had this issue?