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Subwoofer System Installation Guide for BMW 3 Series / 

M3 Coupe, Sedan 92-99 (E36)

Tools Required:

Panel Removal Tool

10mm socket wrench

Crimping Tool / Wire Cutters

Brain

Needle Nose Pliers

We’re going to proceed as follows:

1.

Disassembling the trunk

2.

Making appropriate wiring connections for audio inputs

3.

Power/ground wire connections

4.

Installing the subwoofer enclosure

5.

Tuning/testing the system

The Process:

1.

Begin by  removing  all items from the  trunk of  the vehicle. Make  sure  that all  tail  lights are  in working 

order. If  not, now  is a good  time to replace them. Also, remove the carpet that covers the  floor  of  the 

trunk, as it will reveal several fasteners that will need removing.

2.

Start by removing the taillight covers. Twist the lever clockwise to free the plastic housing.

  

3.

Now, look to the floor and you’ll notice that there is a large black plastic tray  on the driver’s side of  the 

vehicle. We’ll need to remove this. It is secured in place by 10mm plastic nuts.

       

Once the floor panel is removed, we can now pry the carpeted panel on the driver’s side out of the car, 

which will reveal the factory amplifier where our wiring connections will take place.

See photos next page.

1 of 8

Any reproduction, distribution, modification, or dissemination of these instructions without written permission from Bavarian Soundwerks is 

expressly forbidden and a violation of international copyright law.  Any violation will result in persecution to the full extent available under the 

law!

© 2006 Bavarian Soundwerks, LLC.

2195 Defoor Hills Rd., Suite D, Atlanta, GA 30318

P: 404.963.8857 | 

www.bavsound.com

 

Summary of Contents for Subwoofer System

Page 1: ...t by removing the taillight covers Twist the lever clockwise to free the plastic housing 3 Now look to the floor and you ll notice that there is a large black plastic tray on the driver s side of the...

Page 2: ...new amplifier Do NOT put the fuse into the fuse holder until you have made all other connections to the amplifier Ground Wire Black Wire The large black wire goes to a chassis ground We re going to u...

Page 3: ...they enter the factory amplifier Blue w Black Stripe twisted with Brown w Orange Stripe Yellow w Black Stripe twisted with Brown w Orange Stripe 3 Now orient yourself with the BSW amplifier harness It...

Page 4: ...sure before we install it Using your heat gun or more likely hair dryer get the strips warm to the touch and apply as shown 4 of 8 Any reproduction distribution modification or dissemination of these...

Page 5: ...n see the front mounting holes Enclosure has BSW on front side of it where the front tabs simply slide into the holes You may find small plastic inserts covering these holes in your car Remove these 5...

Page 6: ...e brackets with the bolts that you dropped down into the I Beam 3 Using a small pair of needle nose pliers to hold the bolt steady install the second washer up onto the bolt 4 Now slide the lock washe...

Page 7: ...djusting the gain s of the amplifier until you are content with the amount of bass being produced by the subwoofer without any audible distortion of the woofer Make sure that this blends in with the r...

Page 8: ...nal your connection may be the issue Make sure your power and ground connections are correct Using your DMM again check each terminal to make sure that a connection has been established Ground Connect...

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