Figured I would throw my $.02 in this thread since it seems an appropriate location.
I have a 2020 Canadian model Speed Twin which has the center tail and brake light as well as the multi function red indicators that also work as brake lights basically the US set up with the addition of the center light. I prefer the European models with the small thin amber indicators on all four corners and I believe all indicators should be amber not red, replacing all the indicators with the Euro ones seemed like a big headache as these would have to be sourced from over the pond and I was unsure what kind of wiring changes would be required.
Rear original lights.
Rear original lights with brakes on.
First step was to get access to the wiring and see what we are dealing with the original indicators have two connectors one has three wires and one has two wires after some time with the schematic the three wire connector is the indicator function and the two wire connector is the brake function so disconnecting the two wire brake connectors left me with indicators that work as regular indicators but red instead of amber.
Original indicator with two wiring connectors.
I don't mind the look of the original 64mm sized indicators so now I needed to find some 64mm amber ones that will work, part number A9838036 kept coming up as the correct ones, my local dealer confirmed these are correct for my model and the price was reasonable at $120cdn for the set I had my doubts about being plug and play but I rolled the dice and ordered a set, hmmm no mention of Speed Twin on the fit list.
After removing the existing indicators this is what I was looking at, A9838036 on the left and originals on the right not exactly plug and play.
After some testing to confirm the new ones would work I borrowed the original wiring connectors and after some soldering and heat shrink work I ended up with these the green wire in the original connector was not used just the black and the other colored wire which is different for left and right.
Tested again before assembling the tail section.
Now I have what I consider a more normal rear light set up center red tail and brake light and amber indicators that function only as indicators.