Get a 12v test light like this one - http://www.rvpartscenter.co...ID=20&DID=20&CID=192
The test light is better for troubleshooting than a meter. It is an easy to read indication. You will never mistake millivolts for volts with it. You don't have to look at it directly to know if it's on. It will respond immediatedly. Simple. Easy. Good.
Clip the test light clip to a good ground under the dash. Verify the ground by touching the tip to some of the test points on the back of the fuses Don't pull the fuses just touch the light to the little exposed metal test point on the back of the plastic fuse. You should be seeing the light come on. Once you do then you know your ground is good and then move on to the next tests.
At the ignition switch locate the thick Red wire. Probe into the connector hole and see if you have voltage there. You should all the time. If you don't get it then your fusible link back by the battery might be bad, however since you get the chime that would indicate your fusible link is good.
Now with the car in neutral have someone turn the key to start and check for voltage on the thick yellow wire of the switch. If you get it your switch is good. If not your switch is bad.
Now with your friend pushing down the clutch pedal, the car still in neutral just in case and with you under the dash (yeah that should be easy) check for voltage on the fat yellow wire on the clutch switch. The proper switch is the one with the screwy long thing. Btw, if that screwy long thing came disconnected from the pedal or broke that is your problem. Since that is the same wire as at the ignition switch you should get the same indication as at the switch. Now check the fat purple wire of the clutch switch. You should get voltage there when the key is turned to start AND the clutch pedal is depressed.
Next stop off for the fat purple wire is C500 back by the battery. Pull off that little cover and use the tip to probe through the black crap and touch the wire. Again you should have voltage there when the key is turned to start and the clutch pedal is depressed.
Finally the other end of that section of the fat purple wire is at the starter. Voltage when the key is turned and the pedal is depressed.