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Moto Lita Steering Wheel & Horn challenge


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So whos up for for challenge?

 

I got my TR6 and the horn does not work. so I did a clean of relay and all good and I removed the steering wheel and using a wire I realise the horn works - -but the issue is the moto-lita steering wheel fitted by previous owner simply does not work for the horn (but it does look good!).

 

So I need a horn for my MoT equivalent.

 

I attach some pictures and it seems the horn system simply does not fit and I cant see a solution! Any semi-bodge considered for MoT/Danish test.

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post-14945-0-00622100-1502525775_thumb.jpg

Edited by AarhusTr6
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I bought the alternative boss from Moss... cheaper than the motolita one, the wheel fits it fine and the horn wiring worked well

..... Andy

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The spring "pencil" the Roger refers to is missing. Also the horn push flying lead needs to connect to the pencil somehow. The assembly looks nothing like the one I had on my 6.

 

The solution you posted should make it work.

Edited by peejay4A
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Absolutely not Roger . . the previous owner had no connections at all! Nothing worked and I cant figure how to get it to work based on whats there!!

You need to connect the horn push so that the purple wire coming up to the brass ring is earth out on the steering shaft.

 

you need item #5 from here http://www.moss-europe.co.uk/shop-by-model/triumph/tr5-6/electrical-system/horns/horn-relays-fittings-tr5-6.html

 

As Pete stated there should be a wire from the hprn push to the #5 springy thing.

 

Roger

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Hi guys

 

I appreciate the help . . this is the second from last thing for test.

 

I upload another picture showing where, if I run a wire will sound the horn, the points are marked with a red star. So the item you mention Roger, this goes through the hole on the steering wheel and makes contact to the brass ring. So is it the steering wheel that touches the other electrical point and the steering wheel completes the circuit? I just struggle on how the circuit is made . .

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Hi

your picture didn't show.

 

Have a look at this wiring diagram. http://www.advanceautowire.com/tr2506.pdf

 

The two horns are powered through a relay.

The relay is permanently connected to the +12V supply. It is the -ve side that is switched

 

There should be a Purple/black wire from the relay W2 connector running up to the brass ring. If the brass ring is not connected then you MUST connect it.

The spring loaded plunger (#5 from yesterdays post) rubs on the brass ring.

The other end of this plunger has a wire connected to the centre of the horn push button.

The outer edges of the Horn push button has three sprung metal contacts. These press against the wheel hub. A good electrical contact required.

 

The wheel hub is connected to the steering shaft (splines). If the steering shaft uses METAL UJ's (2 off) then it will earth when you press the horn push.

 

IF you have rubber UJ's then you need to install a bridging wire across the rubber (2 off) (from shaft to shaft) This normally goes through the rubber dough nut but can go around the outside.

 

Good luck

 

Roger

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Just to reinforce Roger's points. The circuit is not made to the leftmost of your red stars. It goes from the brass ring through the spring plunger through the fly lead then when you press the horn push the circuit completes through the steering wheel hub and the inner steering column shaft. Test it by connecting the brass ring to the splines where the wheel hub fits and the horn should sound.

Edited by peejay4A
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I truly feel humbled and a times a bit thick . .

 

So I uploaded one more picture with three colour stars to ease reference.

 

When I run a wire across RED & GREEN stars horn goes off.

When I run a wire across RED & YELLOW - stars horn goes off!

 

Also cant find these parts with my car:

 

https://www.rimmerbros.co.uk/Item--i-613766

https://www.rimmerbros.co.uk/Item--i-204741

https://www.rimmerbros.co.uk/Item--i-142534

 

Pretty sure I need part 142534 but unsure of length.

Edited by AarhusTr6
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Probably not solder unless you can remove that plastic sleeve first. The picture doesn't show the rear of the post - perhaps there is a tapped hole there.

Edited by RobH
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I truly feel humbled and a times a bit thick . .

 

So I uploaded one more picture with three colour stars to ease reference.

 

When I run a wire across RED & GREEN stars horn goes off.

When I run a wire across RED & YELLOW - stars horn goes off!

 

Also cant find these parts with my car:

 

https://www.rimmerbros.co.uk/Item--i-613766

https://www.rimmerbros.co.uk/Item--i-204741

https://www.rimmerbros.co.uk/Item--i-142534

 

Pretty sure I need part 142534 but unsure of length.

 

Do you really mean red and yellow makes the horn go? Red and Green, yes but it should also sound with Green and Yellow. Red and Yellow are both grounded so I don't see how that can work.

 

It looks like you need this:

https://www.moto-lita.co.uk/accessories/pencil-contact/

 

The items you say are missing are used on a standard steering wheel. The one part you really need is the Mota Lita pencil contact.

Edited by peejay4A
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Yes Pete - - you are absolutely correct . . the ring is connected to a purple wire and when jumped to RED/YELLOW I getta beep

 

So issue is not wiring per se but the horn mechanics of the after market button

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Yes Pete - - you are absolutely correct . . the ring is connected to a purple wire and when jumped to RED/YELLOW I getta beep

 

So issue is not wiring per se but the horn mechanics of the after market button

Correct. You are missing the Mota Lita pencil which is different to the Triumph one. The TR one fits through the hole once the wheel in in place on the splines and is held in place by the horn push. IIRC the Mota-Lita one locates in the hole from the underside (nearest the brass ring) and has to be fitted before you put the wheel on the splined column. You then need to connect the flying lead from the pencil to the flying lead you have on your horn push, put it all together and away you go.

 

Put a small amount of grease or vaseline on the brass ring before you replace the steering wheel to stop it squeaking as you turn the wheel.

Edited by peejay4A
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getting bit tired in head.

 

whilst I appreciate and understand the posts and am wiser now, I still cant see how the system works for this wheel.

 

The housing (look at the black plastic round thing with a red wire off it) goes into the wheel and is static. The button, ie the one with the logo simply is pushed back by a spring and that's it so cant see how this makes a circuit.

 

hmmmm

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getting bit tired in head.

 

whilst I appreciate and understand the posts and am wiser now, I still cant see how the system works for this wheel.

 

The housing (look at the black plastic round thing with a red wire off it) goes into the wheel and is static. The button, ie the one with the logo simply is pushed back by a spring and that's it so cant see how this makes a circuit.

 

hmmmm

 

The horn button is a switch. It is grounded by the spring retainers that contact the sides of the hub. When you press the button you are essentially grounding the red wire to make the circuit.

 

I have a moto-lita hub that I adapted to work better with the standard TR6 horn design. It still uses the "pencil" but I added a copper disc to the horn push so the pencil had contact through the full rotation of the steering wheel.

 

Stan

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getting bit tired in head.

 

whilst I appreciate and understand the posts and am wiser now, I still cant see how the system works for this wheel.

 

The housing (look at the black plastic round thing with a red wire off it) goes into the wheel and is static. The button, ie the one with the logo simply is pushed back by a spring and that's it so cant see how this makes a circuit.

 

hmmmm

Have you got a multimeter/DVM etc

Switch to Ohms scale.

Connect red lead to your red fly lead on the horn push

Connect black lead to the one of the three springs on the horn pusk

Now press the porn push - the meter should display zero Ohms

 

Roger

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You didn't show a picture of the inside of the horn button. There should be something metal in there which completes the circuit between the centre rivet and the big spring, when you push on the horn button.

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