Thread: Horn wiring.

I am not clear what the issue is. The horn connects to a branch off the "dash harness" with brown and brown/black wires. Polarity is in fact immaterial, neither is earthed, and it should work either way.

Electrically, the brown wire goes via the harness to the battery terminal on the starter switch (up to suffix 'C') or the battery terminal on the starter solenoid, and the brown/black lead to the horn switch, via the harness, which earths the wire when the button is pressed. Note that the horn is unfused.

Originally Posted by JDNSW

I am not clear what the issue is. The horn connects to a branch off the "dash harness" with brown and brown/black wires. Polarity is in fact immaterial, neither is earthed, and it should work either way.

Electrically, the brown wire goes via the harness to the battery terminal on the starter switch (up to suffix 'C') or the battery terminal on the starter solenoid, and the brown/black lead to the horn switch, via the harness, which earths the wire when the button is pressed. Note that the horn is unfused.

Thanks for that. My issue is that I can see where on the physical horn they attach ?

Cheers
Yours in stupid questions

Kim.

Ah! Sorry, I could work that out if the horn was in my hands, but that horn is not identical to any of the ones in my manuals and it is not obvious from the picture.

The horn should have a coil of wire making a solenoid, and one end of that will be connected to a one side of a set of contacts that open when the coil has a current through it. The two wires need to connect to the end of the coil that is not connected to the contacts, and the other wire to the contact that is not connected to the coil. Neither side should be connected to the frame of the horn; it is possible that this is an unsuitable horn that has one side of the circuit intended to be via the frame. In this case it would be necessary to insulate the horn from its mount.

Originally Posted by JDNSW

Ah! Sorry, I could work that out if the horn was in my hands, but that horn is not identical to any of the ones in my manuals and it is not obvious from the picture.

The horn should have a coil of wire making a solenoid, and one end of that will be connected to a one side of a set of contacts that open when the coil has a current through it. The two wires need to connect to the end of the coil that is not connected to the contacts, and the other wire to the contact that is not connected to the coil. Neither side should be connected to the frame of the horn; it is possible that this is an unsuitable horn that has one side of the circuit intended to be via the frame. In this case it would be necessary to insulate the horn from its mount.

Thanks mate. I appreciate the clarification.

It must be a early series 2 looking at that horn i have the same but it’s boxed away will try to look tomorrow by memory the wires either go thru the cap onto contacts inside or connect j
outside of horn
Here’s a picture of mine when I pulled it apart and a copy of workshop manual

Originally Posted by Kimsl70

Thanks for that. My issue is that I can see where on the physical horn they attach ?

Cheers
Yours in stupid questions

Kim.

The bullet connectors don't connect into the horn.
There are wires soldered into place, I can see where one goes but not sure about the other, I'll have to see if I have a spare horn to have a look.
The wires exit the horn and have bullet connectors on the ends, you then join to the bullet connectors in your picture.


Colin

These horns were used on late Series 1s and Series 2s. On mine the bullet connectors just push in.
W.

Originally Posted by B.S.F.

These horns were used on late Series 1s and Series 2s. On mine the bullet connectors just push in.
W.

Just found one down the back shed and as BSF statea, the bullet connectors push in as shown.

Colin