That's interesting about the legality of the fork ear fitments in the US, Mark. Was it only for trailies/enduros? I ask, as the US import road bikes that we get have them fitted to the fork ears.

They did here too.  My statement was misleading.  It's not technically the headlight bucket mounting.  It's the width the signals are spaced.

The law had to do with the width and design of the bike...  law said signals must be placed as wide apart as practically possible.  You'd need to have really long stalks mounted to the headlight to match the width of the handlebar mounts on an enduro. 

If you look at a street bike from the front, the different shaped and usually narrower bars mean the headlight bucket stalks may actually be wider than handlebar mounts would be.

 

Thanks for confirming. 

   I am definitely going for the original look of the bikei ordered 2 old style round signals and I have 2 old style round signals on my old Honda i will be putting them on next month when it arrives in the mean time I am going to put on 4 new k&s signals 
I have a headlight bucket with the number YHA-113
i think it takes 4.75 in headlight can not find one anywhere 
ebay goggle no luck I have attached a couple of pics 
may be someone has information on a 6 volt light that will fit
thanks 

Pretty sure that isn't the original headlight for your bike.

Yours would have been bigger and painted the same colour as the rest of the bike.

I think that is a headlight off a HT1, LT2 or DT100, but wait for others to confirm.

Try Octane Lighting for a new, aftermarket replacement, either for this one or the correct one, if you find a shell.

That might be an AT bucket