Add stereo headphone jack to an exercise bike with hardwired on-board stereo speaker pair Answered
I want to add a stereo headphone jack to an exercise bike with a pair of hard-wired on-board stereo speakers.
I imagine each speaker has 2 wires going to it. Is this as easy as taking either or both ground wires and the two signal wires and wiring a 3.5 mm TRS jack? How does a connected headphone typically turn off sound in speakers?
How do I handle the two ground wired (one going to each speaker).... can I just use either? or if combining grounds, do these need to be electrically "isolated", if so how?
Thanks in advance.