I can't remember which i did. I either used the fuel pump or ECM fuse. You just want to find a fuse that is tied to the ignition so the system comes on and off with the key. I think i started with the fuel pump fuse then used the ECM fuse. You may also need to make some slight mods to the fuse panel cover. On the inside there are some raised "walls" that will crush the ignition wire when you put the cover on... I learned this the hard way. So I ended up cutting a notch in the cover so the wire will feed up freely and not get severed.

+MK4 Modder thank you man preciate it