How can you disable the seat belt dash light.
By putting on your seatbelt? Do you have a moustrack seatbelt or just a regular one. If only a regular one, most Ferrari seatbelt lights can be extinguished by removing the earth (ground) from the light. i.e. by disconnecting the plug (usually under the seat), removing the bulb, putting something non conductive on the lamp holder contacts, etc. Not that I'm recommending you do this. Typically, the power for the light comes from the instrument fuse, so there is no point pulling the fuse. Is there also a buzzer in your system? If you have a mousetrack or "passive" type system, it gets a little more complicated. If it's like the F348, you may have to disconnect both ECUs.