All Yams use two relays of a fashion. Those that have trim and tilt or power tilt. Some integrated together within one unit. Some use two separate relays. Ala Mercury.It is because people are incapable of listening. I tried explaining to some people that the Yamaha is a 2 relay system, even with the wiring diagram I was told I didn't know what I was talking about. Now they find it on Google and it's the gospel. Google is the bible of the parts tosser.
Google is not needed. Outboard motor forums not needed.