Smart Turn System On A 2019 Bonneville T120 - Which Wires To Cut?

I'm using some of my time in lockdown to install a Smart Turn System on my 2019 Bonneville T120. It should be a relatively straightforward process of cutting a wire or six and installing a box of tricks between the switch and the indicators. Me and electricity aren't the best of friends, so I'm a little nervous about paying serious money for a nice bike, then taking a pair of pliers to the wiring loom.

The instructions say to cut the 'flasher signal wire' but there doesn't appear to be a flasher relay from which to work out the correct wire to cut. I guess the relay is part of the ECU.

I know from the Haynes wiring diagram that the left and right flashers are the green/white and green/red wires but I don't know what serves as the flasher relay wire. Anyone got any ideas?

And if anyone has done this to a new model T120, I'd be interested to know at what point they cut into the wiring. I'm planning to make the connection in the headlamp bowl, and run the wires back down the loom to place the ST2 unit on top of the rear master cylinder. Or is there a better way to do it?

Attached are
1. the TS2 Instruction sheet
2. image of the relevant wiring (I think) behind the headlamp
3. T120 wiring diagram

Any help would be appreciated.

 

Wow! I've made those images a little large (sorry) - but the wiring diagram is a lot easier to read. They should always be that size!

 

In case it helps anyone coming after, I found the answer in an instructional posting elsewhere on the internet. It's a good guide to the whole job, and makes useful suggestions about placement and cable routing.

http://www.mylostinterest.com/sts-pg1.html