Scosche SABW525. Scosche SABW525 brackets will allow you to install select 5-1/4' or 6-1/2' speakers in the factory speaker openings of select 1999-06 BMW 3-Series vehicles. 2000 BMW 323i Car Stereo Radio Wiring Diagram Whether your an expert installer or a novice enthusiast with a 2000 BMW 323i, an automotive wiring diagram can save yourself time and headaches. One of the most time consuming tasks with installing a car stereo, car radio, car speakers, car amplifier, car navigation or any mobile electronics is. Bavarian Soundwerks teaches you how to install rear speakers in a 97-01 BMW 5 series (E39). It covers rear deck removal, rear midbass installation and reinstalling the rear deck. Part 1 of 3 - How to Install rear speakers on a BMW 5 series (E39).
Bmw E46 Replacement Speakers
Bmw E46 Rear Speaker Installation
You will need:
-Your choice of Subs and an Amp
-A Speaker line to RCA line out converter
-An Amp Wiring Kit
-A sub enclosure of your choice
Depending on how you purchase the subs and enclosure you may have to assemble the two, but that is quite self explanatory and you should be able to figure it out. So for the purposes of this guide I will assume you have your subs properly mounted in an enclosure. You will also have to decide where you want to mount your amp, some put it on the back of the rear seats, I chose to mount mine on the top of the enclosure.
Step one:
Take your line out converter out, and give it a looksy, it will probably have female connections on the speaker wire end, you will need to cut these off and twist the two negative wires together and two positive wires together, cap them off with a t-connector. Now get into the trunk and lie on your back looking up where the 6x9's are (you may have to tear out a little section of carpet to see it). Fish around for the two wires that go to said speaker, on the left speaker the colors are dark brown, and light brown, believe it or not. Crimp the other part of the t-connections onto these wires, then connect your RCA converter. Plug your RCA cable into the other end. I guessed that light brown was positive and dark brown was negative and it sounds fine.
Step two:
Now its time for the fun part, wiring the battery. Your positive battery cable will run from the connection next to the positive terminal on the battery, through a little fuse breaker thing, and to the positive connection on the Amp. Most of this is really self explanatory, but here are a few pointers. Disconnect the negative connection on the battery while you are messing around in there avoid personal injury. After you set up your positive cable, LEAVE THE FUSE OUT OF IT. REPEAT, LEAVE THE FUSE OUT, installing that little 80A fuse is the last step of the process. The ground cable can connect right at the same place the battery grounds, and then run to the negative connection at the back of the amp. After you connect both battery cables and have them run, you are ready for
Step three:
Connect the positive cable to the amp, then the negative cable. Wire the speakers into the amp, and connect the RCA wires into the 'line in' jacks. Situate your enclosure how you want, I'd pick up some velcro or something that will keep it from moving around in the trunk. Once everything is in place and connected you are allowed to go back over to the battery compartment and stick in that little fuse now that you won't be swinging those wires around. If nothing sparks or explodes, you can go turn the car on and make sure everything works.
My local audio shop warned me against connecting the line out converter directly out of the head unit, some technical jargon about it being the wrong kind of output on a BMW and you have to compensate by cutting the gain wide open on the converter itself, besides this way turned out to be infinitely more simple. I'll try and get some good pictures of each piece of the install tomorrow and post them. Hope this helps.