72 wiring harness

I've been working on my 72 demon wiring and I've found discrepancy in the wiring diagrams. The 72 chassis manual and the 73 diagram I got off the mitchell program show the horn and the starter relay are both dark green with red tracer. The are L & T at bulkhead connector. They seem to be reversed. Starter going to horn relay and horns going to heavy yellow coming from column. When I go to 74 diagram it is repaired. Any in sight on this.
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