Jump to content
DOYLEY

Horn Boss setup with Moto lita steering wheel

Recommended Posts

Hi Gents,

My horn was been a bit “intermittent” over the years, so I thought I would try and get to the bottom in the correct set up.

I’ve attached a couple of photos and was unsure if 

1. I had anything missing- there is a horn ring on the original TR5 steering wheel.

2. Should I replace the push for pencil as the contacts look a bit worn?

3. Line up the copper strip with the pencil?

 Thanks in advance

Doyley

 

 

 

 

5689D82C-9A1A-40F5-A52C-9134508C587B.jpeg

A5A7F3C6-3EA0-476A-BE3E-78AAE9867346.jpeg

Share this post


Link to post
Share on other sites

I had awful trouble with my Motolita boss horn connection which I never managed to sort out - replaced with a Tourist Trophy boss (even cheaper when they have a Special,offer) from Moss and has been perfect ever since.

....... Andy 

Share this post


Link to post
Share on other sites

The 'pencil' connects to the slip ring at the top of the column and provides the positive. The 'orrid bit of bent copper on your horn push must connect to the pencil. The springy bit on the side of the horn push must make an electrical contact with the boss, which in turn provides the earth assuming there is continuity down the column, across the u/j's with link wire, down to the rack and through the earth strap to the chassis. You could solder a wire direct to the pencil to take the bendy copper out of the equation which gives you a better chance of getting the horn push on straight, and you need to make sure all the other links are in place. Don't allow the boss to touch the outer column, but I'm sure you know that.

All together now: 'The slip ring connects to the pencil-bone, the pencil connects to the horn push-bone, ..........'

Jerry

Share this post


Link to post
Share on other sites
17 hours ago, DOYLEY said:

Hi Gents,

My horn was been a bit “intermittent” over the years, so I thought I would try and get to the bottom in the correct set up.

I’ve attached a couple of photos and was unsure if 

1. I had anything missing- there is a horn ring on the original TR5 steering wheel.

2. Should I replace the push for pencil as the contacts look a bit worn?

3. Line up the copper strip with the pencil?

 Thanks in advance

Doyley

 

 

 

 

5689D82C-9A1A-40F5-A52C-9134508C587B.jpeg

A5A7F3C6-3EA0-476A-BE3E-78AAE9867346.jpeg

Hi Doyley if memory serves I'm sure I soldered a flexible  'Jump wire" from the brass end of the pencil to the contact on the horn push, but possible as a first step a good clean of both contact surfaces and a tweak on the horn push contact to make sure you have a good connection between to 2 might be a less invasive option 

Share this post


Link to post
Share on other sites

Do make sure you have the right length pencil for a start as there are two lengths.

Stuart.

Share this post


Link to post
Share on other sites

Hi Guys,

Many thanks for your contributions, very helpful.

I am an infrequent poster, so its really pleasing to be offered help.

Owning and running a TR5 , its always difficult to get he correct advice, and it’s impossible  to know who to ask most of the time as very few understand the beast.

Thank again all.

Regards

Doyley

 

Share this post


Link to post
Share on other sites

Hi Guys,

Some great advice on replacing the pencil, and soldering a jump wire to keep it in contact , with the “horrible copper strip

However I’ve got to the bottom of my horn problem.

Nearly broken wire , on sterling column.

See photo , as it fell apart, as I fiddled with it...

Does any one know what size/type  wire , this should be replaced with?

I always like to check these things if I can 

Many Thanks

Doyley

 

 

 

9AD42EA0-19FD-4E2E-A926-4B9367527B14.jpeg

Share this post


Link to post
Share on other sites

Doyley

That is the wire that earths the horn - You need part No 130581which is a braided wire that would have been there originally.

 Andrew

Edited by ANFRUSSELL

Share this post


Link to post
Share on other sites

...and do not forget to check the circuit to Earth at the rack.   I think it will be a black wire with a ring terminal on the grease plug above the pinion.

Peter W

Share this post


Link to post
Share on other sites

Doyle, 

As a mater of safety the rubber coupling bolts need checking.

the visible bolt with the earth wire is the wrong way round!

regards

Peter

Share this post


Link to post
Share on other sites
On 5/18/2020 at 4:03 PM, DOYLEY said:

Hi Guys,

Many thanks for your contributions, very helpful.

I am an infrequent poster, so its really pleasing to be offered help.

Owning and running a TR5 , its always difficult to get he correct advice, and it’s impossible  to know who to ask most of the time as very few understand the beast.

Thank again all.

Regards

Doyley

 

The horn set-up was first used on the Triumph Herald and then applied to most of the 1960's Triumphs, not the 2000 saloon, so all of the problems are well known in Triumph circles.  From my point of view the advice has been spot on.

Dave

Share this post


Link to post
Share on other sites

Hi Doyley, 

Looking at your photo - I would check that the bolts going through the rubber doughnut are all lock wired - the bolt that still has the earth wire attached appears to be an allen bolt with a nut on the end for attachment of the earth wire. It should be lock wired to the opposite allen bolt - see photos attached. The earth wire should run through the centre of the doughnut.

(It seems Triumph changed from a drilled ordinary bolt to a drilled allen bolt at some time)

Regards Ian

Steering Column Clamp TR6.JPG

Steering Column Clamp.JPG

Share this post


Link to post
Share on other sites

Never understood that obsession about lock wiring, I'm using "R" clips which are easily removable and reusable without compromising safety.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.