There is no resistance between the two negatives meaning I can combine them. I have a switched audio jack but I can't figure out what I connect to where. I have attached a picture...

Is it possible to combine the r- and l- and use that as the ground and then have the l+ as the left and r+ as the right

Where would I get a switch like that?

I'm currently making a tablet from an old LCD and and an LCD controller board. The controller board takes audio from the raspberry pi and outputs it to L-, L+, R- and R+ connectors. Is there a way of having an audio jack between the audio connectors and the speakers so that when a pair of headphones...