MF, glad your project worked out. Did you have to make any connections to pins 2 & 4 when you connected the lights to the Ezcan using pins 1 & 3? Have you any idea what pins 2 & 4 are for? And did you get any fault codes show on the TFT when you disconnected the nanos from the bike’s canbus? Thanks for any information you can offer.
As @MF-Racing retrofitted his Nano lights, I take the liberty to chime in.
I did this 'operation' on my -19 1250 GSA, and did some tests prior to installing, in my case, a CAN-switch.
From the bike, the lights are fed, as already mentioned, through #1 and #3. Both lights are fed from the same source, and the bike is only able to switch them on/off as a pair. There are however two cables that are connected to only one of the lights. I suspect this reports back in case of failure, but this is not confirmed. Anyway, I left them as is, so it does not matter.
The peculiar thing though is that the +12V in the connector is a steady-on supply, and using the switch on the left mirror bracket is closing/opening the ground only. Attempting to disconnect both +12V and GND did throw a fault code on my bike, while disconnecting the +12V cable only did not trigger a warning. (by warning, I mean a fault code requiring GS-911 or similar readout. No warning on the TFT)
My solution:
Since the connector feeds both lights from the same pin, I opened up the harness after the cable is split in a Y, and then I cut the +12V cable , red/blue, for each of the lights. This enabled me to control each light separate, allowing them to flash in faze with the signal lights.
The connector is located on the left side, slightly behind the left signal light. In order to make life easy, I pulled out the harness and did my soldering on the bench.
So.. The only soldering I did was to cut the red/blue to each light, hooked up the red/blue on the light-side to a extended cable to the CANswitch and left the connector side of the red/blue not connected, but insulated since it still carry voltage.
The Rep DVD shows an excellent diagram that shows the routing of the harness to the AUX lights.
I did the job for not too long ago, but so far, no fault code (as read by GS-911).
This way, in order to switch the lights on the switch on left mirror bracket must be used (it controls the grounding of the lights).
The only limiting factor is that when stopping the bike, the lights will not fade slowly to off, as the bike shuts them off right away (by cutting the ground). I find this to be acceptable, as the setup allows the full function of the bikes fault-controll.
Regarding the fault codes, the catch is, if the bike throws a fault code the bike will not accept ANY software updates as long as there are unresolved fault-codes, hence the importance of avoiding them, even if nothing shows on the TFT
