I had the exact issues on my scooter too! I got a friend to check it out with fresh eyes before I hit ultimate frustration and started talking to it in the garage.
He found all my wiring was "Correct"! The issue was the in the pins and plugs were not really getting connected tight or possibly not at all inside the D plugs,( that stands for Deustch, not the D plugs most of those who read this might think I am calling it after hours of messing with it!). It is actually running again,, can we get a Hal - A - lay - Lou - Jah!
Will send pictures of the old Ech with a 40 cal. hole shoot through the center as soon I get a moment alone with the piece of crap that causes so much grief!
Make sure your pins are getting good connections inside those D - Plugs!
Ray

instead of :bang: soon and very soon to be :choppersmiley: