Haynes and Chilton's are for changing oil and doing brake jobs. Anything more technical than that, and they really are worthless.
Why you ask ? Because they are condensed repair manuals that omit many necessary steps to keep the page count low. They are full of errors and outright omissions of vital info, and their wire diagrams are generic to many years, instead of specific to the year the manual relates to. Haynes and Chilton's kinda read like this:
Open hood and remove engine, begin engine overhaul, re-install in reverse order. The FSM tells you exactly what to remove, in the correct order, and how to do it. When it comes time to repair/rebuild/adjust/install any part or system, there are step by step instructions, diagnostic flow charts, test procedures, required tool lists, and all your torque values.
Now and then you can find a bootleg manual to download, but for $7.95 at www.pacificcoastmanuals.com/
you can get a complete and fully correct genuine Jeep FSM for you Jeep. I don't have any connection to the company, I just know they are legit and your get your moneys worth.