One is the fuel pump wiring harness. Its easy to trace since its just a short cable going to the fuel pump mounted in the bottom of the tank.Bringing this one back.
I jut got the Fat Duc and installed it on my 2007 GT1000 as per image below.
But, there are two pieces it can connect to. I put it in the red one. Anyone know if that's wrong and it should go in the blue one?
The other harness goes to the O2 sensor mounted on the exhaust header pipe. Connect it inline with that one.
This may help