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It's the indicator Chas - sometimes the light on the dash is on solidly and because it only happens while I'm driving, I don't know if the actual indicator light is on solidly. Another time, the front and side indicator light bulbs were on even though the car was switched off, the keys were out, and I had checked that I hadn't left the indicator switch up when I got out. I think it's one of those things that'll make the electrician suck in air through his teeth.....