Decware ZSB please help

OK OP my only question; do you have 2 (two) RCA inputs or one?

If you have only one pair or L/R RCAs add a second set. Cut the wires and leave pig tails on the original switch 1/2 - 1" long, from the input RCAs

DON’T cut them to short.

You need THREE dual poles and a two position toggle switch. The center 2 poles is the feed for the two pigtsils you left on the original switch.

The other two pairs of RCAs (L/R) goes to either side of the feed wire poles (center).

https://www.littelfuse.com/~/media/images/technical-resources/commercial-vehicle/switch-pole-throw-d...

You can have an OFF position by adding a 3rd center throw or it could combined both A and B positions (not usually a good idea)

So
A or B
A off B
A both B

Regards

1 and 4 to one set of RCAs (A)
2 and 5 to the pig tails
3 and 6 to the other RCAs (B)

oldhvymec3  yes it has two sets of RCA inputs. Thank you so much for your help this is exactly what I needed and you keep it so simple so I understand  how to do it. I just have one question about the switch. Can I use this switch? Will this one work? Please advise

Thanks again for all you help.
https://www.parts-express.com/SSP%20Applications/PartsExpress@SuiteCentric/SCA%202019.1/img/060-340_...