Beware of stud or bolt extractors - they can snap off when force is applied, and as they're made of harder metal than one's drills this can be difficult to deal with. If you can get a hole drilled reasonably centrally, it might be easier to get a...

Don't forget, that warning light also serves as a brake fluid level warning for the master cylinder reservoir. I've had that problem when one of the wires going to the master cylinder cap broke off. So it's worth checking that the master...