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post #1 of 10 Old Sep 22nd, 2006, 12:24 am Thread Starter
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Street Pilot III power

I am trying to diagnose my loss of 12V to the 4 pin connector on my dealer installed SPIII GPS. I dont have a wiring diagram for the harness and need to know if anyone out there knows where the the B+ for the harness is connected.

Dave Lancello
Indianapolis Indiana
1982 Honda CX500 Turbo
2003 K1200LTE
2006 Harley Street Rod
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post #2 of 10 Old Sep 22nd, 2006, 7:25 am
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Look for a wiring diagram at www.garmin.com

Also try tech support from same site.

The 4 pins carry power, upload, download and ground, I believe. Have seen a diagram showing your answer I am sure but not sure where. Think it was a diagram for installation of said wiring harness.

Good luck, Tom

Tom

2003 R1150RT, Black Beauty--this is one sexy bike!
1999 R1100GSA, Does everything well, what else can one say?
1992 K75SA, If this engine had been 4-valve instead of 2, it would be the smoothest BMW ever built!
1978 R100S, my first and favorite BMW.
1976 R75/6, A 30 year old gentlemen I still love to take out for a Sunday ride.

Last edited by bmwrubbercow; Sep 22nd, 2006 at 7:32 am. Reason: correction
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post #3 of 10 Old Sep 22nd, 2006, 8:32 am
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Ok, I have found something that may help you, but not exactly what you asked for.

In Appendix B, page 55 of my Street Pilot III Owners' Manual there are a couple of diagrams. They indicate:

Brown to be the Serial Data Out
White to be the Serial Data In
Black to be the Ground
Red to be the Power

You are looking for B+ ???? I am going to take a stretch here but I am assuming the B+ stands for the Brown wire which would be a positive feed.


Now in another diagram there is the round 4 pin plug. The little line or notch on the side of the plug (for lining up purposes and allowing it to be inserted into the unit in only one way) is aimed at the 8:00 position with the four holes staring you directly into the face.

After lining it up, note that the 12:00 pin is the ground, the 3:00 pin is the Data Out, the 6:00 pin is the Power and the 9:00 pin is the Data In.

If nothing else, perhaps this will allow you to track the wiring backwards toward the battery on the bike. If you have lost all power, I am assuming the positive is disconnected or that a fuse has blown. Of course you seem concerned with the B+ wire, which as discussed, I am only assuming is the data out wire.

I am also assuming the dealer wired the harness as per this diagram.??

One additional thought. Are you sure you are looking for the B+ wire?? The Black wire which I think would be B- is the ground. If your ground is dsconnected or shorted out, you would lose all power.

Again, good luck. Hope this helps a little.

Tom

Tom

2003 R1150RT, Black Beauty--this is one sexy bike!
1999 R1100GSA, Does everything well, what else can one say?
1992 K75SA, If this engine had been 4-valve instead of 2, it would be the smoothest BMW ever built!
1978 R100S, my first and favorite BMW.
1976 R75/6, A 30 year old gentlemen I still love to take out for a Sunday ride.

Last edited by bmwrubbercow; Sep 22nd, 2006 at 9:01 am. Reason: Additional info
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post #4 of 10 Old Sep 22nd, 2006, 10:38 am Thread Starter
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Thanks for the reply Rubbercow. I need to be more specific . My reference to B+ is the 12 volt Positive ( my auto tech background is showing). I am looking for where the 12 volt power is connected to the bike as per the Garmin installation instructions, what fuse might be used and routing of the GPS harness, before I start tearing into the plastic. I didn't get the install instructions with the bike and my selling dealer is gone.

Dave Lancello
Indianapolis Indiana
1982 Honda CX500 Turbo
2003 K1200LTE
2006 Harley Street Rod
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post #5 of 10 Old Sep 22nd, 2006, 10:51 am
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I just went and looked into the box full of wires and cables I have from my totaled 02,
and the wire that plugs into the SPIII is approximatly 4' long and has a tree pin flat plug on the other end.
It more than likely plugs in under the stingray which means removing both sides of the tupperware, the windshield and the upper nose cover, oh joy.
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post #6 of 10 Old Sep 22nd, 2006, 11:00 am
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Hi,

I have one in a box under the spare room bed at home. I've sent myself a reminder mail to home to look it up when I get there.

Rgds
Mike

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post #7 of 10 Old Sep 22nd, 2006, 11:02 am
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The SPIII cable installs under the stingray on the left side.
You have to remove the left side panel and if you have been there once, you may not need to remove the right side, but it will make your life much easier, since then you can remove the 6 screews who keep the stingray and see better what you are doing.
You will see a 3 pin connector male comming from the front of your bike, attached to a female coming from the back of the bike.
The wires colors are black, white and the third one I can't remmember
It's the only 3 pins connector you will find on the left side under the stingray with black and white and XX wires.

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post #8 of 10 Old Sep 22nd, 2006, 2:29 pm
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Just Looking for the Book, but this is the power cable pin outs if they help any.
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Rgds
Mike

"For those that know, no explanation is needed,
For those that don't, no explanation is possible."

2001 K12 LT Toscana Green AKA Baby Sh*t Green
Kawasaki EN500 - been sold on!
Hardtail Chopper ( Honda CB 500 engine) in a box still!
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post #9 of 10 Old Sep 22nd, 2006, 3:16 pm
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My earlier comments as to the need to trace the wire is because in my experience, all dealers do not follow Garmin's instructions in after market installations.

Some folks specify they want the unit to be powered from a switched wire for example while some want it to be hot all the time allowing bike power rather than us9ing the little drycell batteries in the unit when looking at the map while the bike is not running.

My dealer installed mine by connecting the power wire into the map light on the dash. I no longer have the map light, but I find that not to be important. Also , if I ever need to get to it, I don't (hopefully) have to disassemble the bike.

Tom

Tom

2003 R1150RT, Black Beauty--this is one sexy bike!
1999 R1100GSA, Does everything well, what else can one say?
1992 K75SA, If this engine had been 4-valve instead of 2, it would be the smoothest BMW ever built!
1978 R100S, my first and favorite BMW.
1976 R75/6, A 30 year old gentlemen I still love to take out for a Sunday ride.
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post #10 of 10 Old Sep 24th, 2006, 8:07 pm Thread Starter
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Smile gps power fixed

Thanks to all who helped in my search for the power problem with my GPS. Turns out that the plug under the left side panel hust have been unplugged when I had warrantee repairs done to the rear main and trans seals.
After strsout said it was located under the left side of the sting ray, the unplugged side of the connector fell out when I removed the left side panel so the rest was pretty easy.
Thanks again!

Dave Lancello
Indianapolis Indiana
1982 Honda CX500 Turbo
2003 K1200LTE
2006 Harley Street Rod
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