A lot of CD units from the 2000s were wired to connect to a 6-CD changer mounted in the trunk, and you can get an adapter cable that provides an AUX input this way. I drive a 2001 BMW and I’m able to play music from my phone over the car stereo with one of these (cost around $50).
This worked a lot better before I was forced to buy a new phone without a fucking headphone jack. I have a USB adapter that works but the signal level is much lower than a normal headphone jack so the maximum volume is a lot lower.
A lot of CD units from the 2000s were wired to connect to a 6-CD changer mounted in the trunk, and you can get an adapter cable that provides an AUX input this way. I drive a 2001 BMW and I’m able to play music from my phone over the car stereo with one of these (cost around $50).
This worked a lot better before I was forced to buy a new phone without a fucking headphone jack. I have a USB adapter that works but the signal level is much lower than a normal headphone jack so the maximum volume is a lot lower.