GLA Class (X156) Produced 2013-2020

Subwofer

Old Oct 29, 2021 | 03:39 PM
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Mercedes GLK x156
Subwofer

Friends, I just replaced the speakers in the door and I'd like to add a subwoofer to the system. But it needs to be connected to a battery. Where can I find a passage from the engine to the cab. Does anyone have experience with this?
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Old Oct 31, 2021 | 02:43 AM
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Mercedes GLK x156
Resolved - the passage is behind the battery. The battery must be removed, as well as its cover in which it is stored, and behind it the wiring harness from the fuses can be seen. There is rubber around these cables, which can be used to walk into the cabin and then, after removing the sill covers, proceed to the trunk. I took the right and left signals from the signal leads to the rear speakers in the door.
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Old Nov 10, 2021 | 03:41 PM
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GLE 350 , GLA 250 and Lexus ES 350
Originally Posted by Vrata
Resolved - the passage is behind the battery. The battery must be removed, as well as its cover in which it is stored, and behind it the wiring harness from the fuses can be seen. There is rubber around these cables, which can be used to walk into the cabin and then, after removing the sill covers, proceed to the trunk. I took the right and left signals from the signal leads to the rear speakers in the door.
So easy to go through the firewall no wonder it is not a quiet car. I have 2021 GLA 250 and GLE 350, later is super quiet while GLA250 is noisy. They should beaf up the firewall. GLE firewall is super thick and passage is kind of impossible. Good to know thanks for the post
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