Hello everyone I’m new here. I have a 97 Lx450 I wired in a aftermarket CarPlay stereo but I’m having some trouble. The harness connectors they have for sale I don’t think they’d work for the wiring loom I have which is the s16 style. There is a form on here from 2016 or so and the guy explained which wires went to what so I spliced into each wire I got the two power the ground and all of the speaker + side wires but he didn’t say what wires are for all the - side speaker wires. What’s confusing is I had some sound it was crappy but it was there but then it went away. Do I need to unplug the amp or? Much appreciated