Bavarian Soundwerks BMW E46 User manual

BMW E46 Subwoofer System by BSW Installation Guide:
d110.e46s for BMW 3 Series Sedan ’99-’05 (E46)
Tools Required:
•Panel Removal Tool
•Flat Head screwdriver
•Crimping Tool / Wire Cutters
•Metric Socket Set
•Brain
We’re going to proceed as follows:
1. Disassembling the trunk
2. Power/ground wire connections
3. Making appropriate wiring connections for audio inputs
4. Installing the subwoofer enclosure
5. Tuning/testing the system
Disassembling the Trunk Panels:
If your Sedan has fold down seats, we will only need to remove the carpeting from the Driver’s Side
of the trunk. If it does not, it’s easiest to remove the entire trunk lining.
If your vehicle is HK equipped, you’ll need to remove your factory subwoofers prior to installing the
D110 enclosure. Simply remove the four 8mm bolts that secure each enclosure to the rear deck and
tuck the wiring harnesses back into the rear deck.
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 on both sides of the vehicle. Turn the knob on each
taillight counter clock-wise until the cover becomes loose (Figure 1).
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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 prosecution to the full extent available under the
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© Bavarian Soundwerks, LLC.
2195 Defoor Hills Rd., Suite D, Atlanta, GA 30318
P: 404.963.8857 | www.bavsound.com

3. Now, look to the floor of the trunk. You will see that the two plastic casings on either side
of the trunk are secured by plastic screws on the passenger side and fasteners on the
drivers’ side. The plastic screws on the passenger side can be removed using a flat head
screwdriver.
4. Remove these panels and place them aside. Keep all of the fasteners here so as not to
lose them.
5. Now, look to the carpeted drivers’ side of the trunk, and you will see two fasteners
securing the side panel. Remove these using your panel removal tool.
6. DO NOT Remove the two fasteners on either side of the rear of the carpeted panels
where the three panels seemingly come together. You will need to remove the large,
circular plastic insert in the center of the rear of the trunk however.
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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 prosecution to the full extent available under the
law!
© Bavarian Soundwerks, LLC.
2195 Defoor Hills Rd., Suite D, Atlanta, GA 30318
P: 404.963.8857 | www.bavsound.com

7. Notice the green manual gas tank release on the passenger side (photo above).
Disconnect this as shown.
8. You can now start removing the entire trunk lining from the drivers’ side. Just be patient,
and it will come right out. Your trunk should look like this with the paneling removed. The
factory amplifier is the black box below, and is where we’ll be making several of our
connections.
Installation of the trunk panels will of course be the reverse of the above process. You’ll want to make sure
and put the trunk lining back in before you install your subwoofer enclosure. However, make sure that you
have all wiring connections completed before you re-install the trunk liner!
Power/Ground Connections for the new Amplifier:
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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 prosecution to the full extent available under the
law!
© Bavarian Soundwerks, LLC.
2195 Defoor Hills Rd., Suite D, Atlanta, GA 30318
P: 404.963.8857 | www.bavsound.com

IMPORTANT: Before you make any connections, disconnect the negative battery terminal from the
battery. This will reduce the chance of electrical damage to the vehicle.
Power Wire (Large Gauge Red Wire): Route the large red wire to the positive terminal of the
battery. Loosen and remove the 10mm nut on top of the terminal that secures the actual terminal to the
battery. Put the amplifier power wire ring over the bolt, and tighten the nut back down with the terminal on
the battery. This is the primary power supply for your new amplifier. Connect the other side of the power wire
to the +12V terminal on the amplifier. ONLY when both sides of the wire are connected should you install the
included fuse into the in-line.
Ground Wire (Large Gauge Black Wire):
We recommend using the factory grounding point shown above right, on the outer wall on the driver’s side of
the vehicle.
Remote Turn-On Connection (Small gauge Blue Wire)
Let’s first disconnect the harness from the amplifier as shown below:
With the harness removed, take a close look and note that there are two plugs inside of the main
housing:
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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 prosecution to the full extent available under the
law!
© Bavarian Soundwerks, LLC.
2195 Defoor Hills Rd., Suite D, Atlanta, GA 30318
P: 404.963.8857 | www.bavsound.com

The wire we’ll be looking for is in the GREY plug. It’s a small gauge White wire. The remote turn on
wire is in the grey connector, Pin #10. Note: There are often times two white wires in the amplifier
harness. It is imperative that the correct wire be identified in this step.
Making the connections between your factory wire and the remote turn-on
wire:
It is important to remember here that we are essentially “T’ing” into the factory wires. It is important
that the factory signal flow be allowed to continue back into the factory amplifier.
A Quality set of wire crimpers is required for the next two sections.
For a pictorial of the process outlined below, see photos on the following pages.
1. After stripping back approximately ¼’ of the insulation from the wires, exposing the copper wiring
itself, twist one side of the factory wire that you cut in half together with either the included blue
remote turn on wire or one of the LOC leads, of course depending on your connection.
2. Insert these two wires into one side of the butt connector, and crimp tightly.
3. Insert the remaining half of the white wire into the unused side of the butt connector and again
crimp down tightly.
Getting the Audio Signal to your New Amplifier
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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 prosecution to the full extent available under the
law!
© Bavarian Soundwerks, LLC.
2195 Defoor Hills Rd., Suite D, Atlanta, GA 30318
P: 404.963.8857 | www.bavsound.com