I have the haynes, chilton and the factory shop manual for my 97 xj. There is no comparison to the quality of the factory shop manual. The pinout of every plug, wire color codes, splice points in the harness. You name it. From an electrical standpoint, I don't see how you could beat it.
2 1/2 inches thick, covering 1 model, 1 year. Tracing down 1 electrical problem makes it worthwhile.
I paid $90.00 for mine new from Chrysler, if I was patient, I'm sure I could have got it cheaper.