Indicator lights blinking fast, all bulbs are ok
Over the past few weeks my 156 has started to act strange with the indicator lights. The blinking to both sides is too fast, as in when one of the bulbs are blown, but on my car all the bulbs are working.
Sometimes the blinking is normal, but then it suddenly goes fast, or the other way round (from fast to normal).
I've checked the relay and it looks all fine. As far as I know the bulbs are all of the usual kind I've always used. I checked the ground points right below the battery and the on the right front inner wheel arch.
What could this issue come from? Any ideas?