Re: My ZX 9
And as far as the start button (switch) it has to be getting power because when I push it the head light comes on.
That's right, you said that at the beginning. I told you I wasn't the sharpest crayon in the box.
I still can't quite figure out the horn clue, so I'll ignore that for the moment.
Let's look into that headlight a little more. On mine, when I turn on the key, the lights come on, except the headlight. That is to save the battery power for the starter. When I press start, the starter turns and the headlight stays off. When I release start, the headlight comes on. Does your headlight turn on "as soon as you hit the start button" or only when you release the start button? If it happens when you release it, then it sounds like that system is working perfectly.
Anyway, as you said, the starter switch is probably good. It should be a SPST switch, so if it can trigger the headlight, it shoud be fine. So let's follow the logic to the starter. The switch is working, and it has power. From there the power has to get to the starter. So let's check:
1. Put the bike in neutral, on the center stand, with the side stand up.
2. Check the "out" wire on the starter button. This is the wire that is only hot if you press the button. Make sure it is hot when you press the button.
3. Check the other end of that wire at the starter. It may go through some other switches and junctions along the way, and the color may change. But at the starter there should be a small wire that is only hot when you press the start button. This is the one that powers the starter relay. If you get power there, and only when you hit the start button, then your entire electrical system is working properly and you have a bad starter. If you're not getting power there, but you have it at the starter button, then the problem is somewhere in between. Until you figure out the problem you could hotwire the bike to get you going for a while.
My starter has these contacts (other than the big starter wire and ground)
1. white wire going from the positive starter cable to the alternator and fuse box
2. yellow wire/red stripe powers the relay when the starter button is pressed
3. black wire/yellow stripe goes to ground.
So if you were working on my bike, I would want to see power on the yellow/red wire, but only while the start button is pressed. If that's the case, it's time to change the starter.