Ford F150 service manuals can often be found at RockAuto.com. Select the year, make, model and engine size. Select the Literature tab. If a service manual cannot be found on Rock Auto, it may be available for purchase on eBay.
Service manuals are comprehensive books or CD-ROM software published by automobile companies that detail every aspect of a vehicle. They are typically found at professional repair shops. Unlike basic guides from Haynes or Childress, official service manuals offer repair guidelines for any issue the vehicle may have. Hard copies of manuals are several hundred pages long, and often include wiring diagrams for electrical work. Service manuals usually cost between $100 and $200, as of 2015.