Yes Chris, but the horn is wired slightly differently. One coil wire is connected directly to power while the other coil wire connects to the horn ring. Once grounded at the horn ring, the relay energizes, closing the contacts and making a completed path with the horns.
So, the OEM horn relay is no different from any other relay and it has large contacts. In my book, these relays are overpriced because comparable relays cost only a few bucks. - Dave