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    #1

    What is this?

    So my search for my battery drain has brought an unexpected turn. The drain was around 3A off of Fuse 21. I disconnected the power antenna and the drain dropped to 200mA, still too much. I noticed that whenever I reconnect the battery I hear a noise coming from the power antenna area. The antenna is completely disconnected (as far as I can tell) but there is something that sits in front of it that seems to be making noise almost every time i reconnect the battery. It's kind of like a 'clicking' sound. Here are the pics:




    The car used to have an anti theft system, could this be a part of that? Central locking maybe? I have the premium sound kit, if that makes a difference. How do I go about disconnecting it/fixing the battery draining it seems to be causing.
    Tags: None
    #2
    I think that the factory amp is back in there. But i don't know if that would drain your batt.

    1992 BMW 325iC
    1978 Chevrolet Monte Carlo
    1965 Chevrolet Corvair Monza 140hp

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      #3
      I thought that is where some of the central locking stuff was at on one of mine.
      sigpic

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        #4
        Originally posted by e30 Groupie View Post
        I thought that is where some of the central locking stuff was at on one of mine.
        That is one thing that I suspect. My central locking doesn't work either.

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          #5
          The amplifier for premium sound systems is back there. The central locking computer is in front/driverside next to the speaker.
          "I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj

          85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
          88 M3 - LACHSSILBER/SCHWARZE
          89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
          91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER

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            #6
            Some of the components of the check panel for lighting is back there too. By check panel I mean the chips that will illuminate the red LEDs in the cabin if your license plate light, etc. is out.

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              #7
              An amp will cause a draw on your battery, nearly any electrical device can if it malfunctions. Newer BMWs have problems with fans, final stages for the blower motors and a host of other things, diagnosing this stuff can be quite a headache some times.
              sigpicFormer professional wrench thrower.
              Current:
              1988 325is S52
              Former:
              2008 Sparkling Graphite M3 Sedan(victim of home ownership)
              1988 M5
              1996 328is

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                #8
                Whats is this?

                "A center for ants?!"
                sigpicM42 Brigade ... Throwing craze in the 318

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                  #9
                  thats the CIA tracking/homing device. they are onto you!









                  thats the factory amp that is conn3ected with the phillips screws.

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                    #10
                    So general consensus is the Factory Amp? Hmm... Sounds like it might be a problem with my sound system of both my antenna and amp are draining the battery.

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