Hacking into Garmin 2720 - BMW Luxury Touring Community
 
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post #1 of 12 Old Feb 17th, 2008, 2:37 pm Thread Starter
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Hacking into Garmin 2720

Anyone hack into the 2720 to get audio output? Does it run on 12V or something lower?

I don't have an intercom system, but I was thinking of using the cassette adapter I use for mp3 playback.

TNX
Bob, 00LT
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post #2 of 12 Old Feb 17th, 2008, 4:02 pm
 
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Re: Hacking into Garmin 2720

Quote:
Originally Posted by BecketMa
Anyone hack into the 2720 to get audio output?
What are you trying to accomplish? Please expound.

Quote:
Originally Posted by BecketMa
Does it run on 12V or something lower?
Yes, 12V DC. Umm ... just like your LT.

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Originally Posted by BecketMa
...but I was thinking of using the cassette adapter I use for mp3 playback.
mp3 playback from where? The 2720? It doesn't support mp3 playback.
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post #3 of 12 Old Feb 17th, 2008, 8:21 pm Thread Starter
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Re: Hacking into Garmin 2720

I want to get to an audio line in the 2720 and feed it into the LT's speaker system via a cassette adapter. I use a cassette adapter now to feed audio out from my MP3 into the LT's radio/speaker system.

Bob
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post #4 of 12 Old Feb 17th, 2008, 9:02 pm
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Re: Hacking into Garmin 2720

What's wrong with using the headphone jack on the side ?

I just made up a cable and ran it to the gps input of my intercom and no issues.


John

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post #5 of 12 Old Feb 17th, 2008, 9:11 pm
 
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Re: Hacking into Garmin 2720

Quote:
Originally Posted by BecketMa
I want to get to an audio line in the 2720 and feed it into the LT's speaker system via a cassette adapter. I use a cassette adapter now to feed audio out from my MP3 into the LT's radio/speaker system.
If you buy the Garmin motorcycle mounting kit, it comes with a power cable that has a 2.5mm port (for audio out) integrating right into the cable. No hacking needed. Maybe you should contact a Garmin dealer and ask if you can buy just the cable without the cradle. Should save you some bucks. Give Sean a call at CycleGadgets.com.
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post #6 of 12 Old Feb 17th, 2008, 9:12 pm
 
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Re: Hacking into Garmin 2720

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Originally Posted by JPSpen
What's wrong with using the headphone jack on the side ?
There isn't any headphone jack on the side of a 2720. Just the 2730 and 2820.
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post #7 of 12 Old Feb 17th, 2008, 9:46 pm Thread Starter
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Re: Hacking into Garmin 2720

Since it runs on 12-13V, I'd rather take the lighter plug apart, put my own connectors on it for DC, and then take the audio line for the built in speaker, as long as it is suitable as an audio input line (or called and audio output line).

I really don't want to play around with having to change the impedance of the audio line to the speaker to use it as an input to a cassette adapter.

TNX
Bob
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post #8 of 12 Old Feb 17th, 2008, 10:01 pm
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Re: Hacking into Garmin 2720

didn't know the 2720 wouldn't have a jack.

Yes, The motorcycle cable is definately in order here. The jack is mono, but in your case since only getting voice commands you'd be just fine.

Tearing it up and putting in your own jacks would void the warranty if there is any. But that sounds like something somebody like me would also do.

Good Luck

John

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post #9 of 12 Old Feb 17th, 2008, 11:19 pm Thread Starter
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Re: Hacking into Garmin 2720

Well, I don't mind voiding the warranty on the plug. :-)

I see if I can track down the MC cable. If I'm lucky it will be the same cable as the cig one, except it will have different connectors on it.

ANyone know how much current the 2720 draws?
I see the cig plug has a 3 amp fuse. Sorta hard to believe it draws more current than a CB?

Bob
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post #10 of 12 Old Feb 18th, 2008, 8:53 am
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Re: Hacking into Garmin 2720

Quote:
Originally Posted by BecketMa
Well, I don't mind voiding the warranty on the plug. :-)

I see if I can track down the MC cable. If I'm lucky it will be the same cable as the cig one, except it will have different connectors on it.

ANyone know how much current the 2720 draws?
I see the cig plug has a 3 amp fuse. Sorta hard to believe it draws more current than a CB?
Attached is the pin layout for the plug that goes into a Garmin StreetPilot. The Garmin motorcycle cord has all the wires in it. The motorcle cord has a 1 amp fuse according to the manual for my 2820.
Attached Files
File Type: pdf Garmin Connector.pdf (79.5 KB, 265 views)

Jim S.
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“Not all those who wander are lost.”


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post #11 of 12 Old Feb 18th, 2008, 9:26 am
 
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Thumbs up Re: Hacking into Garmin 2720

Dag! I forgot all about that 'Tips & Tricks' website. Thanks for the reminder.
All you 2610 owners Click HERE to see what I'm talking about.



I edited the pinout pic for a little more clarity:
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post #12 of 12 Old Feb 18th, 2008, 3:02 pm
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Re: Hacking into Garmin 2720

be careful!!! I put my garmin into the bike speakers and it worked great till I turned on the radio it fed back into the garmin and blew up the audio circuit and it cant be fixed here, repairer wont touch it, to old I no longer have any audio

Regards Linton
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