Frigged the old stereo by disconnecting the battery and not getting the code right for it so bought the mrs a sony to go in the laser but found today that none of the speakers are marked - or + so first does it matter when wiring speakers to have them wired - to - and + to + or can you reverse them with to much of a drama. I reversed them in the past with old **** but with a brand new sony wanted to ask first.For instance the drivers door speaker is yellow with blue stripe and white with purple stripe.Also is there any way to tell the - wire with a meter or something.
Anyone have wiring diagram.

$%%%$^%^ jap $%%^$$%%it

 

Stop worrying guys I found a 323 is near perfect in the wiring department so used that and the CD player is up and working.