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Apr 25, 2026
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Hey folks,

I've got an 2017 Seat Alhambra 2.0 TDI DSG SE LUX. I'm trying to fit and wire up a small sub and amp arrangement. I've got most of it sorted and have now moved on to fitting the positive power lead, which needs to go from the positive battery terminal, into the cabin and then through to the amp which is in the boot.

I've figured out most of the cable path through the cabin and in to the boot, but am struggling to find a decent spot to route the cable from the engine bay through to the cabin. I found a factory grommet directly behind the battery, which I managed to feed the cable into, but for life of me I can't seem to find where it enters the cabin, despite feeding a good metre of cable through. I've even tried removing the glovebox but still can't find it.

Has anyone had any luck doing this? Would love to hear how you got it done.

Cheers,

Edd