I'm looking to make my TY175 road legal and have got the original lights working but not the horn.

I've tried a good quality 6v horn but no sound. I'm guessing it doesn't like the Alternating current non-regulated voltage electrics.

Has anyone got any tips?

Have you checked that you are getting 6v at the horn when the button is pressed?

I'm not sure my digital meter can handle the AC the TY gives out. I've done a bit more digging and apparently there are AC and DC horns. Most are DC, and AC ones are/were fitted to things like old Vespas and they make a noise like a duck call !!

So it looks like I need to either fit an old scooter horn or wire a small battery in for my DC horn.

Edited April 23, 201511 yr by dpyam

A digital meter should be able to handle both ac and dc just set dial to ac symbol which is a sine wave, (dc is a solid line with a dotted line underneath).

 

If you are still in doubt then connect a 6v bulb to horn wires and if it lights when you press the button you have voltage.

 

If you wire in a battery permanently you'll need a voltage regulator and a rectifier.

 

Alternatively just fit one of these

Good news folks - we have an MOT!

I stuck with the original electrics after working out the wiring, fixing the switch, and got an AC horn off ebay. It's barely louder than the engine though :-(

I've since seen motoduro sell one that looks a better bet.

Mud here we come :-)

I had a simi;iar problemo on a a iids 2 sroke quad, used a mosfet and capacitor to drive the dc horn. you will have issue with led lights too, got around this also HTHAPYITRD!