I am trying to install a laser jammer in my 335 coupe. I need to find a place to run the wires from the engine bay into the cabin. I've removed the plastic cover and pollen filter, the cover for the ECU on pass side, cover for the master cylinder on the driv and don't seem to be getting any closer to the firewall or a pass thru spot.

Any suggestions?

 

You would be better off at finding answers on a BMW forum like e90post.com...

 

I am not that familiar with the E90 chassis so sorry if this is not helpful, but most BMW's have the battery in the trunk-- and there is generally a large grommet in the firewall on the right side (passenger in the U.S.) behind the glove compartment where the main 12V cable runs to a "jump start" terminal under the hood.

 

Rubber grommet to the right of steering collum.