Hi guys, I'm trying to install a subwoofer but cannot find the firewall between the battery under the hood to inside the car to install the power cable.

Does anyone know if there is another battery at the back to which I can tap into or any way to get through to the battery under the hood.

Or any other cable I can tap into for the power.

The car is a mercedes e270 elegence 2003 model..

thanks alot

 

your main battery is in the trunk/boot, the battery under the hood is an auxilary battery. yu should use the battery in the trunk.

 

thanks alot for the reply. how sure are you that its in the boot for my mercedes. I have opened the floor lining of the boot and cannot find the battery. Will look again tomorrow. thanks

 

in the USA. a 2003 E class sedan had a small battery under the hood, and the main battery was in the trunk. should be there its under the spare tire panel .on the right side in the USA.