Speaker wiring question? + - + - HELP

[JimmyUSN]

OK, I want to put swim deck speakers on the swim deck, WITHOUT AN ADITIONAL AMP, Just using the stock HU.
I'm going to use a switch, to switch from the inside rear speakers to the swim deck speakers, and fade out the front speakers.
I know I can use a 4PDT switch.
My Question is, can I use a DPDT switch and just connect to negative wires together, un-switched?
I might just be over thinking this......

 

[JimmyUSN]

WOW, Anyone?

 

[Bruce]

@andy07sx230ho posted some great info on doing this a few days ago. I believe he switched both the positives and negatives but placing a switch in either side will accomplish what you want.

 

[Bruce]

This is Andy's how to https://jetboaters.net/threads/6-speakers-and-no-amp.1004/#post-13586

 

[JimmyUSN]

I saw it. Brain Fart......