I know this is an old thread but gonna try anyway. I blew the dust off my play 3 and was going to attemp well I’m going to hook up a blue tooth device into the speakers. I will figure it out with trial, error, possibly lots of soldering and heat shrink but wondered if anyone could help me on where to wire it in to make it work with the same sound quality. I’m missing the part that hooks into my router and would like to have it for camping trips anyway. If it’s not possible that’s fine too I have just done it with several othe speakers and systems and had good success. Thanks