My side lights lasted just over 18 months - I put these whiter ones in at the beginning of last year:

Anyway, one has just gone and I have replacement bulbs (same make) to fit when I get home.
Question: Would you just replace the one that has gone or would you replace both working on the assumption that if one as blown and they were installed at the same time then the other is on borrowed time?

Anyway, one has just gone and I have replacement bulbs (same make) to fit when I get home.
Question: Would you just replace the one that has gone or would you replace both working on the assumption that if one as blown and they were installed at the same time then the other is on borrowed time?
