If the draw does not change when you unplug the component, that component is not the draw

Us the wiring diagram Lunatic so helpfully gave you to unplug each component on the diagram tracing just past the ignition fuse you pull. Do them in order, and you will find the bad component.

I'm just repeating what Lunatic said in a different way, but you get the idea right? If you can disconnect every (and triple check that) component in the ignition circuit and the draw stays a .68A then you get to look for pinched of chaffed wiring which is not nearly as fun