Rewired the headlamp instead of buying a new one

The switch died on my old Petzl two weeks ago, and instead of ordering a replacement like a sensible person I sat down with a soldering iron tonight. It took three tries and one small burn on my thumb, but it works. There's a particular satisfaction in keeping gear alive past the point where it's cheaper to replace it — the lamp and I have been through the same storms, and it deserved better than a landfill.