Thought I hit a bit of good luck when I found a master switch to replace the broken one on my YRV Turbo. But when I got it, the normal YRV one has a slightly different back. The loom is exactly the same, but it definitely does not work. The loom slides in vertically on the one and horizontally on the other. It fits in, but does not power up anything. That makes me think the sirion one also doesnt work, despite it looking exactly the same from the top (besides the colour).
So will have to pay full price of £175 for a new part
On the plus side, I got the tonneau cover and door check strap for cheap cheap