Anyone know the voltage so I can make the correct amp selection?

BTW i searched and keep finding stuff about adding the speaker level converter, i just want to use the pre outs in back of head unit, just need the voltage.

 

Plug it in and get a volt meter? Or find a manual for your model HU..

 

Well i wanted to open the dash up once for the install, not for checking and then for installing. I couldn't find it in the book that came with car. I will try to call a dealer.