From another thread on this forum a power socket for a GPS was located on the wiring look behind the speedo. I asked Yamamha if they had the connector for this and they said this was the power supply for the ECU diagnostics and should not be used. To quote the Yamaha mechanic.

"Plugging into the spare lead at the speedo is definitely NOT a good idea. The power supply for the speedo is shared with the ECU - there is some sort of power link between the two, and therefore if you overload the circuit it may cause the ECU to shut down. They use this circuit for diagnostics for this very purpose!Beneath the seat should be a point for an alarm which is powered off the ignition switch and is the better way to go."

Any comments

This is a ba*tard, because I've just cut down my new GPS power cable...

(mind you, it seems to work fine using the socket behind the dash panel x)

xxx

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"Where we're going, we don't need roads..."

JennyDakar.com

Anyone know which connection to use (the one under the seat)?
I had a lookaround but couldn't find a obvious spot.

The manual (big word) is not very helpfull.
I already blew a fuse trying to get my gps to work with power from the bike...

thanks,

Olaf

I am working on the same issue too. When I asked my dealer to install the heated grips, I was surprised that they never connected the power directly to the battery, but instead they tapped the wires that are connected to one of the auxiliary lights. In my case, it's the left auxiliary light connection they used. These wires are located under the black plastic cover under the instruments. The plugs are in white color on both sides. I think they are parking lights which only turn on when the ignition key is turned on but the engine is not started. I tried to post the pictures, but I am having problems with the technicalities of this forum. Picture this nonetheless, a blue and a black wire go into this small white plug that connects to an auxiliary light. The dealer simply divert the blue wire into two 'red' wires, and the black wire is split into two black wires. So the extra 'red' and black wires are used as a power source for the heated grips. Of course, they keep the fuses that come along with the heated grips. So in theory, I don't see why I cannot use the right auxiliary light connection as the power source for the GPS. Having said that, I feel safer by just connecting the power directly onto the battery, I just have to make sure that whatever socket I get will have a fuse and long enough wires, because the fuse will protect from power surge and the long wires to go a long way under the tank (if I can fit through them without removing the tank) to the handlebar.

havent got a tenere so dont know what wires its got where but ive got the XT660R and added many electrical extras. There are a few places that you can tap/wire into like the horn, front lights, brake lights, (on the XTR) there are 2 connectors under the seat one for an alarm the other for an PC111 both have power when the ingination is switched on.

Where ever you connect into make sure to place a fuse inline with wire so as not to damage your GPS or any other item your using the bikes power for.

Hope this helps

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Plough on

Just spent all afternoon rewiring mine, and I have the answer...

When you lift the seat there are various electrical gubbins (technical term x) held to the rear inner mudguard with rubber loops.

If you remove the two square shaped ones, you can see underneath the ECU/CDI unit (the rectangular one with loads of wires) there are a couple of connectors on the loom.

One is a white twin pin plug with a cap/opposite connector over it, however, this is a permanent live (ie not switched with the ignition).

The one you want is the opaque coloured plastic four pin connector (that doesn't have a cover/cap on it.

One of these terminals is live when you switch the ignition on (if you hold the plug with the plastic spring clip to your right, it is the bottom right hand pin. I used the one above it (ie. top right hand pin when the spring clip is to your right) as the earth.

It's a bit of a wiggle feeding the GPS cable through under the tank, but doable with patience.

All works fine now - power is there with ignition on, and off with ignition off.

xxx

ps. I'll try and post a picture or two later this evening.

__________________
"Where we're going, we don't need roads..."

JennyDakar.com

Damn and blast, I've just spent the afternoon connecting up my GPS to the socket behind the dash cover and cut the GPS wire down as it was far too long! It does work though, fortunately I have a spare GPS wire so I will find the other power supply underneath the seat.

Aha thats what thats for, I spotted the connection under the seat the other day and wondered what it did. After I'd checked that all my electrics still worked I realised it wasnt a loose connection.

Just out of interest what wrong with wirring direct to the battery ?

I have a Tom Tom and if you connect straight to the battery the terminals will be live all the time in the base unit. As I have currently connected it all together, when I switch the ignition on the GPS will start up by itself and similarly switch off when the ignition is switched off. Live terminals tend to corrode between themselves and the pins on the Tom Tom are very close together and I would not want them live all the time. I will rewire before I go to Peterborough on Wednedsday, but the system currently works, shame though I don't want to fry the system!

Excellent question. And why the owner's manual doesn't point out those 'benefits'. Another question is why haven't they come up with a maintenance manual yet with the whole electric diagram.