The Stovebolt Site Forums The Shop Area The Electrical Bay 1946 Chevy 1/2Ton - Wiring Horn Relay

I'm trying to finish up my wiring project and still have a wire by the dash, but not sure how/where/if it should be connected? It is labeled #13 on my harness and I have three ends with #13. I have a horn relay and it has a wire (#13) that goes to the horn (#13). I have power in and a wire that connects to the horn button. I tested the #13 wire in the dash and it has continuity to both #13 wires in the engine area (relay and horn). My wire harness instructions has them as: 13- Horn Relay to Horn, 14- Power Feed to Horn Relay, 15- Horn Button to Horn Relay. I have those covered, but trying to figure out what this extra #13 wire? I am updating to 12v with alternator.