OK Kane. I can supply you an 83 schematic later in the day if you still think that helps, but I don't have the Bentley for the late mkII here in CA. I only have an earlier Bentley which covers 85. I have that same late TD cluster which I pugged into my 90 Jetta NA. I expect the single harness makes things easier for mounting, but I honestly don't remember which side it's on.