Horn wiring problem

Technical advice Q&A

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Jagman42
Posts: 23
Joined: Tue Aug 25, 2015 9:32 am
Location: UK
Great Britain

#1 Horn wiring problem

Post by Jagman42 » Mon Mar 06, 2017 10:59 am

Have been having a tidy up of dash wiring etc (as have a rev counter problem) and now have a problem with the horn. It was all working fine before hand but now it only works when the ignition is switched off but does NOT work with the ignition switched on?
Have checked the circuit etc and it all seems fine until the ignition is switched on and then no circuit ( only on the horns).
Will teach me to perhaps leave things alone if they are working well! I am sure it is something very straightforward ( or I hope so!).
Any ideas please???

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ETTony
Posts: 196
Joined: Sun Mar 27, 2016 6:36 pm
Location: Devon, England
Great Britain

#2 Re: Horn wiring problem

Post by ETTony » Sat Mar 11, 2017 8:54 pm

Hi there, my horn became erratic.
It was the slip ring contact.
Remove the steering column bolt / bracket.
This drops the column down and you can get at the brass contacts.
Tony in Devon
1967 Series 1, 4.2, OTS, RHD, Black.

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288gto
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#3 Re: Horn wiring problem

Post by 288gto » Sat Mar 11, 2017 9:12 pm

I might be wrong Tony, but I think Jagman's car is a Series 2 so the horn will be on the stalk switch.
It could be a bad earth on the actual stalk, a problem in the block of stalk bullet connectors or the horn relay though this would point towards getting some wires the wrong way round.

Simon
Simon
1969 S2 OTS

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ETTony
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#4 Re: Horn wiring problem

Post by ETTony » Sun Mar 12, 2017 9:24 am

Hmm, Simon, maybe start at the relay then with a tester/meter to help narrow the prob down.
Tony in Devon
1967 Series 1, 4.2, OTS, RHD, Black.

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