Lancia Motor Club Forum Banner
17 September, 2019, 09:42:22 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Search Calendar Register  
Pages: [1]   Go Down
  Print  
Author Topic: 1973 Fulvia Coupe Horn  (Read 601 times)
0 Members and 1 Guest are viewing this topic.
KeithWade
Member
***
Offline Offline

Posts: 31


« on: 05 March, 2019, 05:33:16 PM »

Probably going over old ground here but just can't seem to get the horn operating. Someone once said that the more puzzling a problem is the more simple the solution is likely to be!

 I've carried out all the usual tests and checks for operation and continuity and the various components seem fine.

Just wondered if anyone can point me in the likely location of the earthing point from the horn button (steering column somewhere?) ? The black wire I believe......

I haven't quite pulled all of my hair out yet!!
Logged
lancialulu
Press Officer
Permanent resident
*****
Offline Offline

Posts: 3550



« Reply #1 on: 05 March, 2019, 06:00:53 PM »

Have a look at the horn relay located on the upper front inner wing. Connector could be dirty or relay contacts need cleaning. Lancia Relay tin can can be easily opened up....
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia HFR
1972 1600 HF
1972 1600 Fulvia Sport
1978 Transformer HF3000 Strato's replica
1979 2500 Gamma Coupe
1988 Delta 1.6GTi.e.
KeithWade
Member
***
Offline Offline

Posts: 31


« Reply #2 on: 06 March, 2019, 10:54:38 AM »

OK I will do that...thanks.

Would still love to find the earthing point for the horn though if anyone has any suggestions........?
Logged
Brian Long
Member
****
Offline Offline

Posts: 65


« Reply #3 on: 06 March, 2019, 11:43:16 AM »

Have you checked whether the small carbon brush is contacting the brass ring on the back of the steering wheel boss?
Brian
Logged
KeithWade
Member
***
Offline Offline

Posts: 31


« Reply #4 on: 07 March, 2019, 11:07:17 AM »

Hi Brian

Yes.. in fact I fitted a new (Omicron supplied) one and spring and there is definitely contact. In fact you can hear it slightly as you turn the wheel........
Logged
chriswgawne
Permanent resident
**
Offline Offline

Posts: 1345



« Reply #5 on: 07 March, 2019, 11:09:35 AM »

I am not sure whether your horn contact on the steering box is the same as that on a S1 but it might be worth checking the contacts down there with a testmeter.
Chris 
Logged

Chris Gawne
Mobile: 07778 216552
KeithWade
Member
***
Offline Offline

Posts: 31


« Reply #6 on: 07 March, 2019, 11:20:35 AM »

Oh OK Chris..the steering box you say? Is this an earth then?
Logged
lancialulu
Press Officer
Permanent resident
*****
Offline Offline

Posts: 3550



« Reply #7 on: 07 March, 2019, 12:29:06 PM »

I am not sure whether your horn contact on the steering box is the same as that on a S1 but it might be worth checking the contacts down there with a testmeter.
Chris 
S1 is very different to S2 and there is a black wire from the back of the earthing plate in the steering wheel that goes to a 4 way junction block and then on to the horn relay. It should be easy to localy earth the 1 terminal on the horn relay to see if the relay activates (I think the ignition needs to be on). The relay is supplied 2 by fuse 9 for the horns and 3 on the relay is the live side of the relay coil (fuse 7 always live).
Logged

Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia HFR
1972 1600 HF
1972 1600 Fulvia Sport
1978 Transformer HF3000 Strato's replica
1979 2500 Gamma Coupe
1988 Delta 1.6GTi.e.
KeithWade
Member
***
Offline Offline

Posts: 31


« Reply #8 on: 07 March, 2019, 04:47:14 PM »

Ok thanks for the suggestion.

I will try this and report back.......
Logged
KeithWade
Member
***
Offline Offline

Posts: 31


« Reply #9 on: 02 May, 2019, 07:50:47 AM »

Well..this puzzle continues. The problem is definitely earth related at the horn push end it seems. The horn operates successfully with the ignition on if I run a test wire from the earth terminal on the horn relay to a separate earth in the front wing. It also operates successfully with ignition on if I run the wire from the earth terminal on the relay to the centre steering wheel spline so the steering column is earthed it would seem. So the issue is clearly with 'upstream' earth wiring from the relay to the brass horn contact or with the horn operating button gear. I have replaced the earth wire between the contact ring and the orange terminal block as when I checked this the copper wire was badly corroded at the contact ring end. Thought this was the issue but still no joy sadly.


* IMG_4045.JPG (960.09 KB, 4032x3024 - viewed 48 times.)

* IMG_4047.JPG (793.33 KB, 4032x3024 - viewed 63 times.)
Logged
fay66
Permanent resident
**
Offline Offline

Posts: 5700



« Reply #10 on: 02 May, 2019, 04:15:48 PM »

Well..this puzzle continues. The problem is definitely earth related at the horn push end it seems. The horn operates successfully with the ignition on if I run a test wire from the earth terminal on the horn relay to a separate earth in the front wing. It also operates successfully with ignition on if I run the wire from the earth terminal on the relay to the centre steering wheel spline so the steering column is earthed it would seem. So the issue is clearly with 'upstream' earth wiring from the relay to the brass horn contact or with the horn operating button gear. I have replaced the earth wire between the contact ring and the orange terminal block as when I checked this the copper wire was badly corroded at the contact ring end. Thought this was the issue but still no joy sadly.
What about the horn contact and slip ring at the bottom of the steering column and the flexible coupling?
Brian
8227  Cool
Logged

Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
1999 Suzuki Wagon R+ GL, now my daughters
2006 Renault Megane 1 5 Dci Sports Tourer
Dedra Technical Adviser
KeithWade
Member
***
Offline Offline

Posts: 31


« Reply #11 on: 03 May, 2019, 05:48:24 AM »

Ahh.... puzzle solved Brian! The actual fault causing the failure was the corroded connection. The continuing puzzle was down to a coating of clear laquer. While trying to address this issue I swopped the original steering wheel for a more substantial Flavia one but had to clean off some old black paint from the spokes. After getting it to bare metal I decided to laquer it and must have also sprayed the centre of the wheel without thinking. This has caused insulation between the bare metal and the brass horn spring hence no ground! Happy days......Thanks for your suggestions though and continued interest.
Logged
fay66
Permanent resident
**
Offline Offline

Posts: 5700



« Reply #12 on: 03 May, 2019, 06:49:00 PM »

Ahh.... puzzle solved Brian! The actual fault causing the failure was the corroded connection. The continuing puzzle was down to a coating of clear laquer. While trying to address this issue I swopped the original steering wheel for a more substantial Flavia one but had to clean off some old black paint from the spokes. After getting it to bare metal I decided to laquer it and must have also sprayed the centre of the wheel without thinking. This has caused insulation between the bare metal and the brass horn spring hence no ground! Happy days......Thanks for your suggestions though and continued interest.
Your welcome Kevin, pleased you've sorted the problem, keep up the good work.
Brian
8227  Cool
Logged

Own 1966 Fulvia 2C Berlina since 1997, back on road 11-1999.Known as "Fay"
1999 Suzuki Wagon R+ GL, now my daughters
2006 Renault Megane 1 5 Dci Sports Tourer
Dedra Technical Adviser
Pages: [1]   Go Up
  Print  
 
Jump to:  

Contact the Forum Administrator

LMC Forum copyright © 2007 - 2018 Lancia Motor Club Ltd

Powered by SMF 1.1.20 | SMF © 2006-2011, Simple Machines