When I unwrapped all my wiring, I found this unusual looking splice that connects from the firewall to the horn relay, voltage regulator and across the radiator support to the junction block. It connects two wires into three but really it's one into three because wire one hasn't been used.
Just curious, Jim
No School Like The Old School!
67 RS 4 Speed with Big Block conversion
12 bolt with Richmond 3.90's