This motorcycle has no horn.
So I attached a horn that was nearby.

I branch the wiring from +12 V nearby.

The switch is the kill switch that was on that side.
I turn the adjusting screw attached to the horn and set it to the place where the biggest sound is heard.

I feel that the sound is small even if I adjust it.

I think that it corresponded to the vehicle inspection by this.
If an exhaust sound is too loud, it is necessary to take measures such as replacing the muffler.

I bring down a motorcycle from the bike stands and tried test run in the premises.
Unlike 400, the 500 is fairly fast, even though it is a single cylinder.
That is interesting.
It is fast that it is different by 100 cc.

If I do not ride a motorcycle a little more, I do not understand the effect that changed the tire to 17 inches.