also find the indicator relay and take the two pin plug off it and bridge the terminals with a piece of metal then see if they light up if they do then your relay needs replacing if they dont then the problem is as crispy says elsewhere .p.s the relay is usually behind the front or top handlebar panel it will be approx 2" x 2" and square or round.
adam bike doctor(of milton keynes motorcycle centre)
November 2010
If you mean all of them at once then check for blown fuse (indicators circuit) faulty or broken switch internals (handlebar switch) broken or trapped wiring, its a start!
Chris P.Duck
November 2010
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