Rocker switch query in Electrical, Electronics and Lighting Posted October 19, 2019 · Edited October 19, 2019 by Mr & Mrs Nobby thanks Alex, much appreciated, I'm in Australia, so hoping to find something a little bit closer. It's a 2 position, four pin switch. Blades at 2,4, 9 & 10. The actual wiring harness it plugs to has 5 wires, hmmmm. I have found one one ebay that seems to be identical, except for the numbers on the side. I was mostly wondering how relevant that number is, does it have to be exact or is is perhaps a superseded number.