Not that I trust the wiring diagram in the service manual, but here's what it shows.
The only soild yellow wires go to the rear tail light, front position light(parking light), and to the #10 position on the fuse panel.
Black & Blue wires show 3 of them coming out of a 6 pin connector to the alternator on one side, but on the other side of that(pins 1,2,and 3), they're solid black and go to the regualtor/rectifier.
I don't think the above will be much help. The service manual has a habit of not showing these connectors unless they are near the item(s) they go to.
