Blue wire should go to the ignition and a white wire with yellow stripe should go to the charge light on the dash. you won't have the white/yellow wire if you have an amp or volt meter.

the other thing to check is the starter exciter wire they sometimes break at the back of the connection and when you wiggle or move the wire a tiny bit it makes contact and will fire the starter. Also check the plug in under the dash that hooks up to the steering colume.