Can't see anything in the IVA manual about brightness so I'm not sure if 10w bulbs would pass. I got them from CBS online and at the time were called "IVA OK" However they seem to have removed a lot of their IVA claims recently for products.
It looks just as cheap to buy some different indicators than it does to fit ballast resistors. Its not super urgent at the moment, at least the wiring and controls are working.
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