So my first failure out of warranty. (4 years+) Sadly not just a blown O/S bulb but a melted bulb holder. The holder connector pins to the cable female connected were all OK. Instead the bulb base was welded due to heat into the bulb holder.
Good news is that the holder is available from Fiat at £12 and you don't have to purchase a complete new unit.
I've ordered two new holders and when I come to fit them I'll check the N/S for signs of over heating.
I have some potential theories:
1) Normally 21W bulbs are not 100% duty cycle and used for brake, indicator and periodically rear fog.
2) The other day I left the car idling for 20 to 30 mins so there would have been no air circulation in the inner wing areas.
I'll be checking the N/S DRL for signs of overheating.
Good news is that the holder is available from Fiat at £12 and you don't have to purchase a complete new unit.
I've ordered two new holders and when I come to fit them I'll check the N/S for signs of over heating.
I have some potential theories:
1) Normally 21W bulbs are not 100% duty cycle and used for brake, indicator and periodically rear fog.
2) The other day I left the car idling for 20 to 30 mins so there would have been no air circulation in the inner wing areas.
I'll be checking the N/S DRL for signs of overheating.