I am trying to fit in a new subwoofer + amp replacing the stock subwoofer of the 10 speaker premium audio. As I am using a high level input on the amp, I will use the wiring black/white wire combination of the stock subwoofer to feed the amp. Only I cannot figure out which of the black and white wires is + and which is -. I asked the dealer, they suggested white is + but were not too sure. Eventually they were kind enough to supply me with the wiring diagrams for the audio part, that shows a speaker enclusure which is supposibly the subwoofer box, only the wire colors are something like puple and yellow, not black and white.
I know there is a trick to figure out which is + and - to just put a 1,5 volt battery on the speaker, when the conus comes out you have connected it the right way. Only I cannot see the woofer from behind the speaker protection, nor can I seem how I can remove the protection without breaking stuff. Is ther someone who knows which is + and which is -? I saw fictures of fully removed subwoofer enclosures, maybe someone who can test the battery thing for me?
Thank you in advance