1968 Woodgrain rallye steering wheel questions

Hey guys I just bought a woodgrain steering wheel with the horn cap and horn cap retainer.







Is there a horn switch or something I need to purchase as well? The car I have has an old crappy aftermarket wheel so I don't have an original horn switch. Is there anything else I need to be able to install the wheel?

Also do you guys know if this is the correct emblem for the horn pad? Thanks!