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Good evening, here is the belt routing diagram that you requested.
If this answers your question then please press "ACCEPT "so that I may be paid for the time spent helping you. If you need more help then please let me know. Thanks
The idler on the right hand side of the picture is the actually pulley/tensioner that is used to tighten the belt. Here is the diagram for the a/c setup so that you can see the difference.
The above information is directly from the Jeep service manual and there are only to designs....with or without a/c.
If you can attach a picture of your pulleys then please do so that I can visually see it.