This was also my experience before swapping to LED. I treated them as disposable and when a bulb blew replaced the whole unit for fractionally more than just new bulb! Fog lights were the worst for it and required a good strip and clean before...
I will be renewing all 8 of the lamps on my 1993 Defender 110.
I don't want to use LED units, however I also don't want those awful 'Made in India' ones.
So my questiion is: who makes a decent quality set of lamps..?
Many thanks, for any...