Re: Garage Door Opener

[Nathan J Nagel <gearhead+@xxxxxxxxxxxxxx>]

Excerpts from internet.bmw: 28-Aug-98 Garage Door Opener by "Chao,
Harvey"@domain.elided 
>  
> Lane wrote:
>  
> >P.S. It's not really "hardwired", it still runs off the 9 volt.  If anyone
> >who knows more about electricity than I do knows if I can somehow run it
> off
> >the car's 12 volt power and how I would go about doing that, let me know.
> >TIA.
>  
> Actually, for as long as the battery in one of these things lasts (years and
> years!!!) why bother?  
>  
> Although I haven't read how you installed yours, I modified my transmitter
> with the smallest "earphone" jack I could find so that it is in parallel
> with the original switch contacts.  I then wired a plug for this jack that
> ends in a switch (obtained from a salvage yard) that is installed in an
> existing spare switch location on my dashboard. [In this case, an E28 which
> has a fader control on one side of the radio, and a blank "knock out" on the
> other side which is where I installed the new switch so that it looks
> "factory"].   The transmitter can then be tucked out of sight behind the
> dash wherever convenient (or in my case in the glove box where the plug in
> flash light would go).  With this arrangement, I can easily remove or
> reinstall the transmitter from the car in about 10 seconds.
>  
> Harvey
>  

If you really wanna hardwire it to eliminate the battery, go to Radio
Shack and get a 9V battery connector and a universal power adapter for
aoutomotive accessories (like a CD player, radar detector, etc.) set it
to 9V, hide it somewhere and wire it in, then connect the 9V battery
connector to the output wires (polarity will be reversed because you're
using it to simulate a battery, not connect to one.)  enjoy...

nate 

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