The power from the headlight switch feeds the dimmer switch. The dimmer switch will have one wire for low and one wire for high beam each feeding terminal 86 on the low/high beam relays. The headlights would then be fed off of terminal 87, again, high and low) If you wire as shown, it would work, but you lose the benefit of the 2nd relay, right? So to make this correct, the dimmer switch needs to be moved down to the T in the 'Yellow' wire, then a 'Yellow' would come from the top of the dimmer to Terminal 86 of the top relay for 'High' beam. A Yellow wire would come from the bottom to Terminal 86 of the bottom relay for 'Low' beam. Erase the 'Red' wire from Terminal 87 of the bottom relay and connect the 'Blue' from the 'Low' beam headlight there.
So, after going back and looking at the original wiring, it would work that way, you are basically eliminating the 2nd battery feed that would be necessary to the 2nd relay with the 'Red' wire from 87 to 30. I think I get it now. Carry on.
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