just one more point
I will give two examples of how the CD has much better information.
If you look at Haynes, in Chapter 12 paragraph 31 Wiring Diagrams:
"Since it isn't possible to include all wiring diagrams....the following diagrams are those that are typical and most commonly needed"
They give a table of color codes but no other explanation about how to read the schematics.
If you look at some of the generic schematics in Haynes, you can see numbers like C123 and G105 and S206. This is not explained, but these refer to Connectors, Grounds and Splices in the electrical harness. On the CD, you can look these up by number (C123) and find the location described both in words, (ie left front inner fender) and with a drawing. The practical use of this is that if you suspect that you have a ground problem in (for example) the power window circuit you can easily find all of the grounds in the circuit. You can easily find a connector so you can check for voltage or continuity in any circuit.
Second example: Chapter 7 Part C para 1 Transfer Case
"Due to the complexity of the transfer cases...this chapter only covers
...removal and installation procedures."
The service manual (CD) has three chapters on the transfer case. The first chapter gives the description & operation + Diagnosis & Testing (DTC's and Pinpoint Tests) plus Symptom Chart for both A4WD (4.0L) and AWD (5.0L). The second chapter is In-Vehicle repairs and complete teardown of A4WD case. The third chapter is the same for AWD. I agree that not many would have the courage (stupidity? ) to tear apart their T-case on the front lawn, but at least you will know what you're getting for your $1200 when the shop does it for you.
I think knowledge is power, and this CD has a lot of knowledge in it.