Sup guys! I have been a honda/acura owner for the past ten years. I had an account over at honda tech and recently moved up to BMW.
I have done lots of researching and things about it and love the car and the new family and the respect that goes along with it but I have a question about my sound system im having problems with it.
I have a 2010 323i 4 door BMW white on black. it is the BASE model. No Nav and No rear door speaker grills. ( i have 2 speakers under the seats) so in total i believe i got 6 speakers? (assuming theres speakers in the back but their not in the doors)
I searched the internet before I did my system install since the factory head unit is TERRIBLE beyond words..
I searched the car for the oem amp and I cannot find it anywhere. it is not in the trunk under the floor boards, or under the compartments. it is not under the front seats nor anywhere inside the car to be found. (i have not checked under rear seats and or behind any panneling in the trunk but im positive i do not have an oem amp)
So i proceeded with my install, i put two 12 inch hiphonics subs in the trunk and mounted an alpine mono block amp to it. I wired the positive wire for the amp to the battery directy in the trunk, and grounded my ground to the battery negative terminal as well ( couldnt find any other good grounding locations).
I ran my rcas to the front along with my remote wire(amp turn on lead).
I bought the harness for the alpine cda head unit im using and wired the colors accordingly and the remote wire, and i also purchased the am/fm cable and connected that to the deck and also connected my rcas...
I did not run a constant lead for the ignition wire to the battery like most people done here in my research because i just twisted the red and yellow (ignition and constant) from my alpine harness together and wired them to the yellow(battery) lead on the oem harness and it powers my headu nit and everything.
it seems to me that Everything is hooked up correctly (except for the three brown wires from the oem harness, because there is nowhere to put them) [and my illumination orange wire and pink wire from the alpine harness].
The sound system works amzingly awesome and loud and everything is beautiful, no distortion, no static nothing but im having a problem with the settings on my head unit saving long term after i shut off the car. ( although the car shuts off the head unit doesnt because of the constant power cables but i just turn off the cda and take off the faceplate anyway so thats not a big deal.
The problem im having is my base settings, my trebble settings, my clock and all my other settings on the head unit does not save long term (if i go in for the night and come out again the next day and turn it on its all reset to default settings and the am/fm radio is on instead of my disc, etc..)
I'm wondering if anybody here could help me fix this save problem and help me determin if i do in fact need to run the ignition wire to the battery because the oem harness doesn't have a ignition wire, well ti does, but it just doesn't hook up to anything on the back of it.
Also if anybody can chime in here and tell me if i in fact do have an oem amp hidden somewhere i missed?
Also if anybody knows if there is a module or anything i need to buy to keep my door chimes and fuel chimes, etc etc.
thanks all !