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Joined: Jul 2010
Posts: 63
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 63 |
I have a 6 volt single terminal horn and I don't quite understand the wiring. I assume that the plus Battery connects to the horn terminal and the case is grounded via the connection to the boss on the manifold. Where does the single wire from the horn button connect? when this button is depressed it connects this wire to ground I think? any enlightenment would be appreciated
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Joined: Jan 2008
Posts: 828 Likes: 6
ChatMaster - 750
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ChatMaster - 750
Joined: Jan 2008
Posts: 828 Likes: 6 |
The wire from the horn button should go to a relay, and ground it. There should be a hot wire to the relay and also one from the relay to the horn.
Dens Chevys 1927 Speedster 1928 coupe 1941street rod 1947Fleetline 4 door 1949 1/2 ton Pickup (sold) 1954 210 4 door 1972 Monte Carlo 2003 Corvette convt..
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Joined: Jul 2010
Posts: 63
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 63 |
Inside the horn there is a coil . One side goes to the single terminal and the other side to case ground. When power is applied to the horn terminal, the coil is energized and the contact opens. If I connect the lead from the horn button to the horn terminal, when I press the button the coil should be energized and the contacts should close. Is this how the horn works without a relay? what wrong with this picture. Can't find any wiring diagrams showing this system.
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Joined: Feb 2011
Posts: 292
Backyard Mechanic
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Backyard Mechanic
Joined: Feb 2011
Posts: 292 |
The horn will not work with out a horn relay. Power goes to relay and from relay to horn, horn button goes to relay as horn button is the ground.
Relay has three thermals power in power out and ground.
Al
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Joined: Jul 2010
Posts: 63
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 63 |
Thanks Al,
I will get a relay and try that
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Joined: Oct 2009
Posts: 1,294
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: Oct 2009
Posts: 1,294 |
The horn will not work with out a horn relay. Power goes to relay and from relay to horn, horn button goes to relay as horn button is the ground.
Relay has three thermals power in power out and ground.
Al I have a 37 truck and there is no horn relay. The small horn that bolts to the manifold does not need one. The hot wire goes to the horn and the wire from the button is ground.
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
A single horn did not require a relay. The relay was used with dual horns due to the large amount of current draw.
Gene Schneider
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Joined: Jul 2010
Posts: 63
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 63 |
Thanks guys,
I bought a relay and that should do it
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