Which loom for rally with px stator plate.


I have a 1974 Rally femsatronic which I have started to convert to 12v... I have a px stator that has had the modification so that it fits.... Thing is, I am unsure which loom to use. I have done away with the indicators but remain undecided whether to lose the battery too. Just want to keep electrics as simple as possible (in spite of having SiP speedo etc). Another problem is that being a 74 model, the ignition is under the seat near the fuel tap. Can anyone point me in the right direction please.... Thanks in advance...