Looking at the diagram in your Amazon link I would say to connect that bus bar lug for the ground terminals ( on the bottom of your diagram where you have the black lead from #85 on the relay connected to) to a chassis ground or run it back to the battery negative. Then reconnect #85 black lead to one of the screws where the other two black leads are. As is you have no return for the loads to ground. Just my humble opinion. I will add that my experience is with a FZ-1 Distribution Block with an internal relay and not an external relay like your diagram. Maybe someone else here can confirm your external relay connections as to solenoid and contacts (#'s 30, 85, 86, & 87).