Like a dummy I left one of my 265s outside all winter, uncovered. With a fully charged battery there's no electricity. No headlights, no dash lights, certainly not a peep from the starter.
Both fuses are OK. Next, I got out the test light. But I don't have a wiring diagram handy, and figured I'd inspect the switch first. It and the harness end looked ugly. Both are soaking in vinegar.
Unless there's something else to check beforehand, I'll know tomorrow if corrosion is the problem.