Jan 14, 2020 · After having my second turn signal/horn switch break in a year, I've decided to try and add a horn relay instead. I will use the horn button to connect the ground for the relay to activate the horns. I'm using this hub for my aftermarket steering wheel.

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Jun 26, 2018 · If you'd like to install a relay and do away with the "hot" wire going up the steering column and go for a "ground switched" approach, see the attached wiring diagram. Attachments Horn Relay.jpg

Jan 21, 2014 · I have a 1970 Mustang which the horn has never worked since I got it. It has two horns in front of the radiator, but I wonder if the horn relay is bad or missing. Can someone tell me where to locate it?

Jul 14, 2008 · Greg, I have not seen a relay on any schematics or on any 70 cars I've owned or worked on. The horn is actuated at the turn signal switch by the steering wheel switch. Are they not honking?

Oct 22, 2019 · I put a Bosch style relay under the dash in my 69' for the horn. Midlife is correct on the color codes for the wiring. I tapped into the yellow wire for the input power to the relay. I then cut the blue/yellow wire under the dash after it comes down from the turn signal switch.

Jul 26, 2023 · This included its horn wiring diagram which was designed to provide an efficient and effective way to activate the car's horns. The 1969 Mustang's horn wiring diagram is one of the most intricate of its kind.

BLACK HORN RELAY *SEE NOTE NOTE: You should have two wires left. Blue w/yellow goes out to horn. Yellow is power for horn. These, along with the black wire MUST be used with a relay that came with the column. The black wire is the trigger. Late Mustang Wiring Diagrams For ididit columns with 3 7/8” GM Wire Plugs only

Dec 13, 2017 · To understand the wiring for your 1970 Mustang, use a wiring diagram that lists a variety of components within the electrical system and each component's corresponding electrical connection. A wiring diagram lays out all of the connections between those parts so that you can easily match the appropriate wires.

Oct 6, 2011 · Check column plug and then the multi plug under the hood. A quick check would be to get a 6 or 7 foot length of 16 Gauge wire and solder an alagator clip on each end. Attach one side to the wire at the horn and the other on one of the multi meter probes.