I bought a couple of these bulbs out of interest really, because I'd always thought the headlights were adequate before..
So when they arrived I remembered I'd never got around to fitting relays and the warning above about fried plastic bulb connectors also prompted me to investigate upgrading the wires first.
I started to make a list of the bits and quickly realised I couldn't do it for less than a complete kit, posted from Thailand..
£17 how do they do that? - On second thoughts, I don't want to know.
So I fit the kit, nice and easy, and when I take out the old bulbs find they're rated at 100/80.
So that's why they seemed okay before. And maybe that's why last winter I needed to replace a crispy switch..
Oh well. We're all golden now.