Greetings, and welcome to the WTF! club. Yours assumption re. a bad earth is on the money. A couple of years ago, I disobeyed my dear old mum's instructions, and went out after dark. I was using the main beam candle setting, the pretty little blue light was functioning well, and I operated the turn signal. The indicators worked well enough (21Watt Bulbs), but, yes, the orange repeater lamps in the display both gave a very weak effort together. The solution for me was to completely disembowel all the spaghetti in the headlamp, and clean and polish every single connection in there. If I remember correctly, there is a multi connector with a host of green wires, and these in particular were not in a great state of health. All cleaned, re-connected, and back to how it should be. Have a very therapeutic couple of hours mate! Mick.