Haynes is OK, for reference stuff, wiring diagrams and general information.
I am used to their vagueness and lies, if you can work out what is what in their lists, the torque wrench settings are really useful - I have a 1/2 drive in Nm and a 3/8 in Lb ft - with them listing both is a real help.
Just keep an eye out for a hardback edition used on ebay - Paper backs are just wrong!