PTO clutch will not engage.

first start by turning ign on,then switch on the pto switch to on. you should hear a click in the clutch. if not use a twelve volt test light,hook aligator end to a good groundand the needle end,,,touch to the pto switchharness to see if you have power to the pto switch. if you don"t, you have to go checkfurther to your power source,(battery) if you do have power there check to see if you have power at the plugin at the end of your wire harness, just at the beginning of where your cluch connects up. you can test you clutch by conneting a test wire from positive on your battery to one of the terminals on your clutch and the other terminal to ground . It willengage if it is good .using either wire is ok as all it will be doing is completing a circuit. hope this helps.