I have a K11 sidecar. The RHS blinkers are the originals, no problem there.

On the left (sidecar) I have LED blinkers. Naturally these flash at a high rate. I tried fitting the resistors in various configurations  without success. They continued to flash quickly.

What is the easiest solution to this?

Make the modification to the circuit card that disables hyper flash; there are numerous threads with pictures and instructions.

Thanks - found how to do it. Will give it a go over the weekend.