trying to get the ac to work on my 89 jeep cherokee the freon is good it isnt leaking the wire going to the compresser has juice to it but the clutch dosnt turn on but if i jump it to a constant hot it will engage. so i am wondering can i just toggle it or will that burn out the clutch if its running all the time? if it will waht should i check i know i should get a volt meter to see how much the plug is actuall getting. so if any one has any ideas please let me know