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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

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Old 05-28-2012, 06:45 PM
'49 F-1 '49 F-1 is offline
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1950 f-1 horn relay

On the horn relay for a 1950 F-1 where do the wires go, there is a
H B S on the relay it self, this is 6 volt system. If anybody could help me that would be great. thanks RICH
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Old 05-28-2012, 08:01 PM
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H goes to the horn, B goes to the Battery (or to the starter relay), S goes to the horn button switch.
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Old 05-28-2012, 08:29 PM
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OK thats what i thought,so witch side of batrery, the (-) side? and or witch terminal on the relay??


RICH
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Old 05-28-2012, 10:22 PM
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Run your relay to the side of the battery that is NOT the chassis ground. If you are running positive ground then yes you will connect to the negitive side
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Old 05-28-2012, 11:31 PM
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Originally Posted by '49 F-1 View Post
OK thats what i thought,so witch side of batrery, the (-) side? and or witch terminal on the relay??


RICH
The battery connection on mine runs to the right side of my starter relay, which is the side connected to the battery negative lead, not the starter cable side. Mine is 6 volt positive ground, but that makes no difference for the way the horn relay is wired. B goes to Battery, or power, whether it's 6 or 12 volt, positive or negative ground. B does not go to ground, it goes to battery voltage. It's how the horn relay provides power to the horn(s). The horn button (Switch) provides the ground to complete the relay circuit.
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Old 05-29-2012, 10:29 AM
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ok i have a single horn (stock) has 2 wires coming from it, yellow & blue/orange. now from the horn relay witch wire do i connect too, and were does the other wire go (ground maybe) thanks rich

(and the horn does work)
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Old 05-29-2012, 11:22 AM
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Some others can weigh in on this but do you really need a horn relay with a single horn? Your vehicle never had one. Of course it was 6V but still . . . it isn't like you are using your horn a lot. Or do you? A relay normally is there to provide a low amperage circuit that will reduce arcing. I'm not sure that a single horn needs it even at 12v. I subscribe to the KISS principle if at all possible. Lets see what everyone else thinks.

Attached are some wiring diagrams. Note that a wire supplies battery voltage from the circuit breaker on the back of IP to the horn. Then the wire from the horn button runs down the center of the steering column, through the firewall and out to the other horn terminal. I'm not sure if the terminals on your horn are marked but I'm not sure that it makes a big difference which wire goes to which horn terminal.
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Old 05-29-2012, 08:22 PM
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Well, okay, that's different from my 51, which has a horn relay and two horns (5 Star Extra). I guess the 50 didn't have a relay?

So wire one side of the horn to Battery power, and the other to your horn button wire. Simple circuit with no relay. Maybe the 51 horns draw a lot more current?
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