67 Alpine horn issue

[Alpi67]

Good morning all. This is my first post
Can anyone tell me if the horn should be functional at all time on a 67 Alpine or only when the car is running, or perhaps when the car is running and when the key is on ''accessories'' position? thanks

 

[sunalp]

I assume you have stock wiring in your car. Do they work all the time, or just when the key
is on. It's been a while since I've worked on a stock wired car so not sure how it was. If memory
serves, which is an iffy situation sometimes, they work all the time. I know in the harness I sell
they do as well.
Hope that helps!
Cheers,
Steve

 

[rixter]

Ignition ON for me on my series 5. And of course when the car is running as well. Does not work otherwise.

 

[Tom H]

See the original wiring diagram here:

http://sunbeamalpine.org/wp-content/uploads/2017/09/s5_diagram.pdf

It shows the horns, wiper, gauges, and turn signals all are wired as part of the Green wires, which gets power at terminal 4 of the fuse block, which means it get power through the fuse there, which gets it power from the White circuit , which gets its power from the Ignition switch when the switch is in the ON position. The Green circuit is thus described as Switched and Fused . The heater blower is not shown in this schematic , but it is also wired to the Green circuit. Note that the Alpine Ignition switch also has an Accessory position, where power only goes to Terminal 4, of the switch (typically the radio but could be other things) when in that position. Of course Terminal 4 also gets power when in the ON or RUN position.

Tom

 

[Alpi67]

I assume you have stock wiring in your car. Do they work all the time, or just when the key
is on. It's been a while since I've worked on a stock wired car so not sure how it was. If memory
serves, which is an iffy situation sometimes, they work all the time. I know in the harness I sell
they do as well.
Hope that helps!
Cheers,
Steve

Hello, thanks for your reply, not sure if the wiring harness is original or not.

 

[Alpi67]

Ignition ON for me on my series 5. And of course when the car is running as well. Does not work otherwise.

Cool thanks for the response.

 

[Alpi67]

See the original wiring diagram here:

http://sunbeamalpine.org/wp-content/uploads/2017/09/s5_diagram.pdf

It shows the horns, wiper, gauges, and turn signals all are wired as part of the Green wires, which gets power at terminal 4 of the fuse block, which means it get power through the fuse there, which gets it power from the White circuit , which gets its power from the Ignition switch when the switch is in the ON position. The Green circuit is thus described as Switched and Fused . The heater blower is not shown in this schematic , but it is also wired to the Green circuit. Note that the Alpine Ignition switch also has an Accessory position, where power only goes to Terminal 4, of the switch (typically the radio but could be other things) when in that position. Of course Terminal 4 also gets power when in the ON or RUN position.

Tom

Wow, nice thing to have the wiring diagram, this will tell me right away if it is hooked up properly.
Thanks again

 

[jumpinjan]

Strangely enough, the '67 Mk-II Tiger has the horns operable any time.
Jan

 

[Tim R]

If you car is not concours one of the best things that you can do is to fit a relay and thicker wires to the horns. You will have MUCH louder horns for minimal cost. (Ignore the bit about Fusebox 1, Fuse 5, that is for when the entire car has had modern wiring installed, just give the relay a live feed)
Tim R

 

[Alpi67]

Good idea, will see what they sound like and maybe give it a try if I’m not happy with the sound.