"Clarion pu-2859a(l) rd3-01" Receiving Aux from the radio

Hello, I have a question for friends who know about radio work: My Peugeot 206+ has a "Clarion pu-2859a(l) rd3-01" brand radio. I'm trying to get an AUX input. There's an empty socket at the back and I have an aux cable with a mini ISO input. I've shared the empty socket and the socket diagram in the photos. Is it possible to get an aux output from this socket without soldering to the radio's circuit? There's a very expensive aux tool on the internet, can't there be a cheap solution instead of buying it? Note: There's no aux mode on the radio, unfortunately. Even if I fit the cable, I don't know how to solve the next step. https://ibb.co/TtMXSJfhttps://ibb.co/kMn5Q0phttps://ibb.co/mrWwJ3vThank you in advance for your comments.

Hello, I have the same model. I removed the CD and connected the auxiliary input internally. However, the sound is low on the left side. Is it possible to connect the auxiliary input via the mini ISO or another method?