BMW R1200RT/R1250RT Forum

RTman10 wrote:You will find the socket to connect it behind and under the headlight, normally has a black cap on it.

• the 2006 RT only has one connector under the headstock. It has three wires; red/white, blue & brown. Housed in the male version of the nippy norman type connector. No cap on it so it looks like it has been used previously.
• the V cradle has two looms / connectors, one with three wires; red, black & purple. These are housed in a female version of nippy norman type connector. This is the cable I've used to make the connection. The second cable has two wires brown & red in a different housing, not sure what this is for?
• the socket under the headstock has power to it even with the ignition off, I found this out when putting my test wires into the male connector as the one in the red/white wire shorted against the frame! Also with the DVM across the red / white & brown wires it again 'sparked. I was rather surprised by this! So I'm thinking V+ is red /white & Blue V- & the brown part of the cam bus, but I need a look at a wiring diagram to figure this out.
• By plugging the 660 into the cradle with the ignition on or off it did power-up from time to time, but it stayed on when the ignition was turned off, which makes sense if there is power to the connector at all times. But the unit was not charging this I'm sure of as the battery icon lost a bar whilst I was experimenting.

UKDucatiman wrote:

• the 2006 RT only has one connector under the headstock. It has three wires; red/white, blue & brown.

UKDucatiman wrote:

• the V cradle has two looms / connectors, one with three wires; red, black & purple. These are housed in a female version of nippy norman type connector. This is the cable I've used to make the connection. The second cable has two wires brown & red in a different housing, not sure what this is for?

UKDucatiman wrote:

• the socket under the headstock has power to it even with the ignition off, I found this out when putting my test wires into the male connector as the one in the red/white wire shorted against the frame! Also with the DVM across the red / white & brown wires it again 'sparked. I was rather surprised by this! So I'm thinking V+ is red /white & Blue V- & the brown part of the cam bus, but I need a look at a wiring diagram to figure this out.

UKDucatiman wrote:

• By plugging the 660 into the cradle with the ignition on or off it did power-up from time to time, but it stayed on when the ignition was turned off, which makes sense if there is power to the connector at all times. But the unit was not charging this I'm sure of as the battery icon lost a bar whilst I was experimenting.

RTman10 wrote: If your single plug is showing live with the ignition off its been interfered with as that plug is definitely canbus controlled and goes off about 40 seconds after switch off. 
Also if you say you 660 went down a bar when you had it in the cradle it was not getting power from the bike as it doesn't show the bars when on bike power.
As you said there was no cover on the plug it could of course been damaged by weather over the years as well.
Might still pay go visit your local dealer and ask them to connect a V before you try anything else. I would also advise against going directly to the battery.  Although the Garmin and the BMW cradles both have covers they are far from weather proof with the unit off.

UKDucatiman wrote:So in summary not great and I'm not convinced about the socket under headset.

DaygloDavid wrote: How about getting a male version of the power connector (like the one under the headstock),attaching it to the Nav V Cradle & take an ignition switched power supply from the Aux. Socket on the left-hand front side panel.

UKDucatiman wrote:Probably better to just remove the connector and hardware into the aux socket. Will consider this as otherwise the V cradle will be of no use to me.