Terry
Nothing much to add to Doug's post except it it is a good idea to have an old blanket (or similar) ready to lay the dashboard onto rather than rest actually touching the steering column. However sometimes this is unnecessary as the wiring prevents it touching at all.
Top Tip: While you are under the dash , label the relays which are mounted on the bulkhead, you will thank yourself for that when you need to replace them. I don't know the details of the Roadster wiring , but one will be the fuel pump relay (on the right with a purple and black feed wire) . This is the one that needs replacing most frequently.
