@Mcromack, I would suggest leaving it alone, not worth the investment.
I bought the cable that plugs into that socket, allowing you to use a USB connection to anything like iPhone charging cable.
It worked for a while, and was great because the digital quality of music was miles better than an audio-headphone cable connection to AUX.
However, since iOS 11, I've been having problems with reliable connections and totally died since iOS 13. It won't play any music etc now.
I've gone back to having a Bluetooth receiver attached to the AUX socket.