| Author |  Topic  | |
UK_Sub
V4 Guru
United Kingdom
2661 Posts |  Posted - 19 Dec 2024 : 11:34:22  
| I've fitted the earlier 2-stroke steering wheel, obviously the horn ring doesn't work as it's different set up to the V4.
So I thought I'd install a horn button on the dash - which in theory sounds easy!?
But I'm struggling to get it to work, has anyone else done this or hve any tips?
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christophe
V4 Fanatic
France
295 Posts | Posted - 19 Dec 2024 : 12:41:28
| | Your dashboard is gorgeous! I really miss these colorful interiors. Do you know if your horn is actuated by the négative or positive lead. You might have to use a relay. |  |
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andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 19 Dec 2024 : 12:43:39
| Simon. Does the horn the work, when it's connected directly to a battery?
How have you wired it?
A horn normally has 12 volts conected directly to one connection, from the fuse box, the other connection goes up to the steering wheel, simply to give it the earth connection, when you push the switch. The standard arrangement does not use a relay.
1978 LHD SAAB 96
1978 MGB Roadster
1975 RHD Saab 96
1991 Nissan Figaro |
Edited by - andydeans3 on 19 Dec 2024 12:45:01 | |
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UK_Sub
V4 Guru
United Kingdom
2661 Posts | Posted - 19 Dec 2024 : 13:22:53
| I think I traced the black wire that normally goes to the V4 contact on the column - if that goes into one side of the button, where does the other side go (to the fusebox or just to ground)?
The red wire appears to go from the horn to the fusebox.
The horn does work - it's brand new. | |
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christophe
V4 Fanatic
France
295 Posts | Posted - 19 Dec 2024 : 14:01:08
| | The black wire (-) goes to à junction box, where it feeds à Grey wire that goes directly to the horn. So, your button on the dash should be connected to earth on one side an to the horn on the other. |
Edited by - christophe on 19 Dec 2024 14:14:19 | |
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andydeans3
V4 Guru
United Kingdom
2233 Posts | Posted - 19 Dec 2024 : 17:30:08
| quote:
Originally posted by christophe
The black wire (-) goes to à junction box, where it feeds à Grey wire that goes directly to the horn. So, your button on the dash should be connected to earth on one side an to the horn on the other.
It certainly sounds like it's as I decsribed above. ie the horn simply has a direct +ve feed from the fuse box, and a black wire, (black is always earth), from the second conection on the horn, that feeds up to the connection in the steering wheel. When you push the horn, you simply complete the earth circuit, to make the horn work.
Have you got 12 volts at the horn connection?
If yes, I would suspect a break in the probably black wire, that feeds up to the horn button.
If no, then there's perhaps a break in the wire feeding the horn, from the fuse box.
Or perhaps:-
Bad fuse, or bad fuse connection?
Bad spade terminal on the fuse box?
1978 LHD SAAB 96
1978 MGB Roadster
1975 RHD Saab 96
1991 Nissan Figaro |
Edited by - andydeans3 on 19 Dec 2024 17:36:10 | |
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shoestring
V4 Beginner
85 Posts | Posted - 20 Dec 2024 : 09:40:44
| I might well be wrong but does the horn need to be operated while the hands are on the steering wheel ?
Cheers,
Barry | |
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melle
V4 Guru
United Kingdom
4145 Posts | Posted - 20 Dec 2024 : 10:15:57
| Perhaps you could you a stalk from a 68/69 car? These MYs the steering wheel had a big rubber crash pad centre without a horn push, and the horn was operated via one of the stalks (not sure whether it was the indicator or the wash/wipe stalk).
www.saabv4.com | |
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Woody
V4 Guru
United Kingdom
2878 Posts | Posted - 20 Dec 2024 : 17:09:02
| | My 69 v4 deluxe had the horn operated by pulling back on the wiper stalk. Best to look at wiring diagram for earth contacts. What year is the wiring loom? | |
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Alrawli
V4 Fan
United Kingdom
107 Posts | Posted - 21 Dec 2024 : 11:41:14
| I've mounted my horn on the dash for much the same reason, replacement steering wheel seemed to make the connection always on. Instead of drilling a hole I removed one of the bolts for the heater controls and swapped in a push button switch, will take a pic. I did this years ago so will need to check the mounting but its not an issue for MOT.
https://www.instagram.com/al_rawli/
@al_rawli | |
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christophe
V4 Fanatic
France
295 Posts | Posted - 21 Dec 2024 : 16:34:30
| | Glad to see your car is back on the road, Al! | |
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| | Topic | |
fitting a horn button
