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Mar 9, 2026
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I'm owning a Cupra Formentor 2021 Hybrid and I want to install my sufwoofer from my old car. It's the first time I'm going to install an audio system on a fairly new car; where I can't replace the radio unit.

- What is the best side to pull the cables from the battery? As far as I can find online, it's the most easiest to do on the left side.
- Is there any line output available on any connector? Maybe some pre-wired from the Beats system? Or do I need to go with a high-low converter from the back speakers?
- What other audio upgrades should or can I do? Or am I very limited with the default radio unit?

Any help, tips or recommendations are welcome.