Hi folks,

I was into the dealership for my first 600 mile maintenance last Tuesday, and I ordered a specific accessory plug for feeding my Garmin 276C GPS. There are 2 accessory outlets on the Canbus system that allow one to drain power: 1 in the front, under the tank panel that hides the battery (it is zip tied to a framepart, and has a rubber cover on it), and 1 in the back under the seat (which I wasn't able to locate yet up until now).

There are 3 wires on the accessory outlet: 1 with a brown wire (must be ground), 1 with a red-and-white wire (should be +12V), and thirdly 1 with a I think blue-and-another-color wire. Does anybody know the function of this wire? The dealer tech couldn't answer very definitive, he thought it was a wire to power instrument lighting or the like, but he was not sure at all. He indicated however that the +12V would stay on for 15 to 30 seconds after the ignition was turned off.
As a complement let me tell you that the brown and red-and-white wire are positioned in the connector side by side, whereas the third wire is positioned on top of the connector between the 2 other wires, if that helps.

Rather than do the guessing, I would like to rely on the wisdom of this forum to find out the function of the third wire? Does anybody know?

I will receive my accessory connector tomorrow in the snailmail, so would appreciate knowing how to wire it to my Garmin 276C power cable.

Thx

Luc

Surely a voltage meter would come in real handy for this, no? Perhaps one is a switched lead, and one is not.

In the mean time I found out the third wire is blue-and-green. Yes I have a voltmeter, but I do not think one is permanent and the other one switched, but I will try for sure!

Will keep you guys posted!

Luc

Cool, keep us posted :thumb

I found it and it would be ideal for my tank bag as well. I will send a note to my dealer tomorrow and see if I can get any info on it.

Thanks,

Phil

__________________
Phil Space
Springfield, VA
2007 K1200GT the road beast
2009 F800GS - My little adventure bike.
2007 F800ST - Her's, but I can ride it.

Brown = ground

Red white = +12 V (stay on for +20 seconds after ignition turned off)

Blue/green = 12 V (follow the ignition key immediately)

/Anders

GT owner in Stockholm Sweden.

PS wonderful bike!!!

Thanks

__________________
Phil Space
Springfield, VA
2007 K1200GT the road beast
2009 F800GS - My little adventure bike.
2007 F800ST - Her's, but I can ride it.

I'm a little slow, and a "picture is worth a thousand words!" Is it possible you could take a picture of the connnector. I'll dig around and see if I can find the connector, but that is exactly what I'm looking for. Especially up there where I put my autocom and want all my toher stuff to run off of a relay!

Thanks

It will be a while before I take the covers off, but basically, if you take the battery cover off, you will see a metal cross member that is in front of the batter. If you run your fingers along the front edge of the cross member, will feel the cable and connector wire tied there. We believe it is used to power the BMW Navigator, but basically, it's a low current switched power circuit that you could use for your tank bag, GPS or whatever.

__________________
Phil Space
Springfield, VA
2007 K1200GT the road beast
2009 F800GS - My little adventure bike.
2007 F800ST - Her's, but I can ride it.

Perrrrfect!

Thanks Phil

Hi guys,

Here we are with some pictures.

First of all the actual connector that you can order at your dealer. BMW Partnumber is 90 000 611 656




Then a few shots of the accessory outlet under the battery cover (rubber cover removed):





Anders indicated that the blue/green wire is +12V immediately after the ignition key is switched on and dies off when the ignition key is off. Well, yes and no: it is indeed switched directly with the ignition key, but has 11.2 V, which is 1.2 V less than the red/white wire, that gives 12.4 V, at least when the engine is not running! If the engine is running, the blue/green gives 13.2 V and the red/white gives 14.3 V, the brown wire being the ground wire. This difference could be important with some specific devices, so use in function of what you want to hook up.

For clarity sake: the terminals are numbered 1, 2 and 3 on both the connector and the accesory plug. 1 is the brown wire and is the ground, blue/green is terminal 2 (directly switched 12V on and off) and red/white is terminal 3 (directly switched 12V on and delayed by 1 minute 12 V switched off).

On the accessory plug the (yellow) wires are also numbered 1, 2 and 3 (see picture), in accordance with the terminal numbers, and are about 38 cm (15") long.

There is room enough between the battery and the frame to tuck away neatly the accessory connector together with the accessory socket. I read somewhere that the accessory socket allows to draw up to 7 amperes of current, sure enough for all the dashboard gizmos, like GPS, XM radio, radar detectors, walkmans, MP3 players and the like. But most likely not enough to add a heated vest over there.

I will now trim the yellow wires and solder them to my Garmin GPSMAP 276C power cable via terminals 1 and 3, because that will give me the time to push one of my 276C buttons, so that the GPS can stay on and continue on battery power, when I do a stop and want the GPS staying on, finishing the project off with some heat shrink tubing. The power cable will be fixed with some tie zips to the frame in order not to overstress the soldered cable.

Hope this helps out the guys that are interested and clarifies a bit.

Rgds

Luc