fearless_dsm said:You need a total of three relays..main,fuel pump and o2 sensor heater relay.
Seems like you know the basics of what is needed,and with the Hondata diagram,youve got 2/3rds of the wiring completed.All you need to know after that is where those wires go at the factory c101 and c131 plugs.A service manual should get you going in the right direction.