Wiring help

I'm re-wiring the engine bay of my '71 Duster with harnesses i bought from YearOne. I have looked at three separate wiring diagrams and, while they are consistent with each other, do not match my car. For example, this diagram (http://www.mymopar.com/downloads/1971/71ValiantA.JPG) shows the yellow starter relay wire going through the forward light harness and the green/red horn wire going through the engine harness. Luckily i saved my old harnesses and noticed that the opposite is true for my car (i.e. the starter relay wire is connected to the engine harness and the horn wire is in the forward light harness). I was wondering if anyone else has run into this and if there is an alternate wiring diagram out there that can help me.

Thanks,
RS