Original factory manuals!
“In this world, you get what you pay for.” – Kurt Vonnegut
As far as cars are concerned, there is only one unique repair manual for every single one. This unique guide, also known as the factory service manual is the one delivered by the manufacturer to the authorized dealer; and while many manufacturers may claim that their manual is capable of covering a single model for many years ahead, this however is not an honest statement.
What makes a factory manual unique is the fact that in a majority of cases, this manual is chosen by the Vehicle Identification Number (VIN). Since manufacturers, on a regular basis, change or modify car models to enhance performance and looks, no one manual can completely serve a vehicle that has been modified from its earlier original manufacture.
In your opinion, is it possible to use the same manual for a 2004 Ford F-150 Heritage and a Ford F-150 Pickup? Or do you agree that a single manual can fit the requirements of a 2004 and 2005 car models? For anyone of you, who think the answer may be yes, are terribly wrong!
Even though many car models of two consecutive years or of two very different years may seem exactly same at the first glance, however the difference they are carrying within is immense. There is every possibility that a guide to fine tuning of a 2004 model, when used on a 2005 model, may completely destroy the products of the engine. However signifying the difference between two models will be quite a task for us, however skilled electricians are quite capable of identifying the wiring diagram differences between models of two different years.
In practical sense, no manufacturer produces an exact same model of a car for more than a year; rather sometimes changes are made in the model’s manufacturing in mid year, creating two changed car models in a single year.