C CiviC New member Jul 14, 2009 #1 I recently purchased a 2009 mazda 3 and i have a sub amp headunit and amp wire kit already. My question is if i get this professionally installed will it void my warranty.
I recently purchased a 2009 mazda 3 and i have a sub amp headunit and amp wire kit already. My question is if i get this professionally installed will it void my warranty.
