I inherited my uncle's 99 S70 with 8 speakers and SC-816. I really wanted Bluetooth, USB, and iPhone capabilites so I got a GROM USB2 unit and installed it today. Things aren't working well - the unit keeps hitting next track basically ruining any attempt to play music from any device.
I chose this route because I'm car audio dumb and didn't know how or if I could use say the Kenwood DDX370 with the stock speakers or if I am looking at adding an amp to the mix as well. My goal here is to use the stock wires and wiring and not have to run new speaker wires and / or an amp with an aftermarket HU to power all 8 speakers. Is that possible?