I have an 05 R1 and was wondering how to wire the fuel pump. The MNR loom I have for the car has provision for a fuel pump but so does the bike loom that came with the engine.

My question is do I use the fuel pump wiring in the MNR loom, which I presume is just a constant power supply or do I use the wiring from the bike loom?
Does the ECU control the fuel pump on the bike?

I am trying to get straight in my tiny mind what I need to keep from the bike loom.

I used both!

Why?
A) you need the power supply in the back (MNR loom)
B) you need ECU to control the fuel pump (bike loom)

So I wired the fuel pump to a relay commanding the MNR's loom fuel pump circuit, right after the fuses.

Best of both worlds

Cheers,
Joao

[Edited on 07/11/1 by JoaoCaldeira]

Agreed, you can use one, the other, or both... im sorry, as this really isnt any help to you when i do mine ill be doing it like JC. using the bike loom to switch a relay on the MNR loom

I see, that makes more sense now.

Hey guys,
i've also been trying to get my head around the wiring for the fuel pump, on 2005 r1

i've draw a diagram to what i think i need to do
from reading the above.
or do i need an extra relay, as i think the bike loom has one already?
Rescued attachment relay-diag1.jpg

i had issues with my mnr loom, for some reason i only had one connecting wire for my fuel pump( a pink one) at the rear of the car.

strange how it never made its way to the relays, or else where so i ended up running my own...apart from that the loom was faultless!!

John, that's exactly how I understand it and how I am going to do mine, that way the bike ecu will control when the fuel pump is running.