Generator, Voltage Regulator & Horn Relay Sheet 17.00: Horn Sheet 18.00: Headlamp Sheet 19.00: Parking & Signal Lamp Sheet 20.00: Tail & Stop Lamp Sheet 21.00: License Plate Lamp Sheet 22.00: Speedometer Shaft Sheet 23.00: Signal Switch Sheet 24.00: Clip & Grommet Location Sheet 25.00: Wiring Diagram (Left Drive) Sheet 27.00: Wiring Diagram.. If the relay clicks, that one goes to the horn button and the other has the black wire to the horns. If you ground the wrong one, nothing will happen, just don't touch both terminals at the same time with a ground.. Below is the best wiring diagram I've found for a '57 Chevy..As you can see the red wire on the B terminal goes to the B.
![[DIAGRAM] 57 Chevy Wiring Diagram For Horn](http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0996b43f/80/25/b7/b8/large/0996b43f8025b7b8.gif "[DIAGRAM] 57 Chevy Wiring Diagram For Horn")
![[DIAGRAM] 57 Chevy Wiring Diagram For Horn](https://www.justanswer.com/uploads/carhelp4u/2008-10-25_191601_2008-10-25_151601.png "[DIAGRAM] 57 Chevy Wiring Diagram For Horn")
36 Chevy 351C/FMX/8"/M II gswarren `57 Admirer; Posts: 2; Location: Council bluffs, IA; Logged; Re: '57 Fairlane horn wiring #4. 2020-09-25 11:52. Thank you all for the info. Still trying to get more familiar with this car. Was thinking about drilling the hole for a contact but wasn't sure what parts I might need.. '57 Fairlane horn wiring.. Hello everyone from very hot Central Cal from all the fires and the heat. I need help with wiring the horn on my 57 chevy. I replaced the voltage regulator with an alternator not paying attention about the wires. Any help would be appreciated. Thanks Marcelo