Caveat emptor, I don't have a 650 twin.

I can't imagine why you can't run a satnav from a 12v power outlet. If it's a din socket and you need a traditional 12v *** lighter socket, there are plenty of converters available.

 

The position of the socket may make a difference. The one on my 2 Spark single is on the frame down-tube to the left of the engine. When I tried running a Sat Nav from this, vibration and the angle of the socket, meant that the plug worked loose with monotonous regularity :doh: so I had it wired permanently to part of the lighting system in the main loom (don't ask me what, as "electrickery" is not my strong suit, & someone who knew what he was doing did the job, which is still working some 10 years later).

I have used a Din connector on an Optimate charger to charge the battery, and have a small Touratech inspection light which works fine.

 

Have you thought about a hardwire kit with switchable power wired direct from battery, simple to fit and waterproof. Keeps bikes socket free for anything else that may need charge.

http://www.ebay.co.uk/itm/Mini-USB-Motorcycle-Direct-to-Battery-Hard-Wire-Charger-/120727116969

 

Be carefull there. If I remember, the twins have canbus.

 

12v power supply

William909,

You can run your GPS from the power outlet behind the ignition without any bother. It is linked to the canbus system and will power down shortly after the ignition is switched off (not sure how long it stays live, but a search on UKGSer for that info will en-lighten you)

On my F8GS and my F650GS twin, I connected up a fused battery charging lead direct to the battery and I run my gps from that supply without any bother.

SteveT

 

just thought i would add to this.
Replaced the battery on my F800gs 3 weeks ago after it going flat.
Though 4 yrs old so time for a new one.
Not had bike out last 2 weeks till needed it last Wednesday
Battery flat but charging system ok.
3Weeks ago wired a sat nav up to the specific connector for it on top of the battery.
There is a convertor half way along the satnav power cord to reduce the cuurent from the bike down to the sat nav voltage.
This stops the can bus system shutting down completely and causes a parasitic drain.
The satnav powers down shortly after switching ignition of but the convertor still draws current and keeps the canbus awake.
Today had to rewire sat nav through a micro relay to eliminate the current drain.
Worth checking for a drain if connecting up to the specific sat nav connector and save yourself a flat battery.

 

Just wire it direct to the battery. and set the gps to switch off after a set time.

 

I run my tomtom with no issues from the socket. Any time I stop for any length of time I disconnect, no way would I leave it on the bike when parked up, so in tbe back box it goes. No chance to get nicked or drain the battery.