Just for anyone still trying to connect something to the opaque connector under the seat (post JMO), I followed JOM's discription (lower right connector for plus and above one for earth) and I have no problem...

Very strange. What where the problems you had JMO?

Olaf

Hi Olaf - I found my GPS would cut out intermittently, and at one point wouldn't turn itself back on? I presumed it was an earthing problem - any one of the three remaining wires seem to make the circuit together with the one that is positive when ignition is on, but perhaps they are not all 'earth' wires all the time? I don't think it was simply a loose connection, as I'd used 1.5mm blade pins that sit snugly in the connector block, and heat shrink over the block too...

Based on this, and what the tech dept at Yamaha UK said (above), I have now used a waterproof mini blade fuse holder and cut into the loom using the brown wire of the rear brake light switch (soldered and heat-shrink, proper job x), and earthed the GPS direct to the battery... it's all neat and under the seat, and the fuses common with the rest of the bike.

And it works!

xxx

Aux Circuit
 

I took a different approach.

Run a cable from the brake light switch on the brake lever (one is live with the ignition, and you can tap into it with a piggy back spade connector),

Run a live (fused) cable from the batery, and -ve cable,

In the nearside (left as you sit on the bike) fairing, where the indicator attaches, there is space inside to put some cables and a relay. You have to remove it from the bike, then remove the indicator and it comes appart

Install a relay, in the gap, and you've got a Aux circuit, take one feed up to the GPS (mounted on the GPS mounting bar, with a Touratech GPS locking mont) and there you go!

Also from the Aux circuit, I installed a BMW Power socket - It's crap! couple of days rain and it's all crappy inside, needs replaced! You could just about fit a 12v cigarette socket if you were careful.

SO, I managed to run - GPS (Zumo550), EXO2 Heated Gloves, Kiess Heated jacket, phone charger, Laptop charger and Camcorder charger from it without any obvious problems. This was only a day or so though, the heated stuff wasn't used that much.

Just when we thought we had heard the last of this new information has come to light.

I have it on good authority that the connector behind the headlight is in fact an optional 12 V supply. It is connected into the parking light circuit that is on a 10 Amp fuse.

It was first reported from various Yamaha tech that this was a FI diagnostic connector but that is a 3 pin connector under the seat.

So to confirm this I tried this, I took out the parking light fuse ( fuse no1) and sure enough no voltage on this connector, also if you turn on your parking lights this connector comes on.

So I'm fairly sure that this can be used as a generic 12V supply.

There also should be another in line fuse between this and the 10 Amp fuse on the parking light circuit but I am yet to find it. Please let us know if you find this.

hi im getting my tenere next week the first job is the heated grips is the sidelamp /aux sufficient [with added fuse] or is a relay nesessary in that circuit?

many thanks

Heated grips will actually work from the Brake light feed, and without needing to change any fuses, just a little spade piggy-back connector will do.

If you are considering putting other stuff on in the future (12v power socket, GPS, extra lights), an auxilary circuit is the best way forward. It's not difficult and the gubbins will fit in the gap in the grey side panels.

I would not tap into anything else i would go direct into the connector I described , and if you want to be extra safe put an in line fuse into the circuit.

I fitted winding roads heated grips they work great

just placed my order with them had considered hot grips, then thought how would they work with bar ends so symtecs are the way forward as im getting the ktm hand gaurds jmo recommended. i've got a set of orange ones on my exc they seem big enough will have to order black ones now doh

thanks stoic

I missed this when you posed originally, but thank goodness for a definitive answer at last! (Although I'm concerned that a number of Yamaha technicians don't know what they're talking about?!)

At least there is an answer now! (and it makes perfect sense for Yamaha to have included a switched supply behind the headlight, as the bar above is meant for a GPS...)

xxx

Is this the small Black 2 pin plug behind the headlight?