What is the EVH Model? | Seymour Duncan Jun 15, 2015There is no “EVH” pickup. There is, however, a custom shop pickup called the 78 Model, which some people abbreviate as “E.V.H.,” because it offers evenly-voiced harmonics 78 Model pickup is a faithful recreation of the legendary low-output, Alnico 2, P.A.F.-style humbucker that Seymour designed in 1978 for various high-profile artists he was working with at the time. Guitar Wiring Diagrams & Resources | GuitarElectronics Get a custom drawn guitar or bass wiring diagram designed to your specifications for any type of pickups, switching and controls and options. Just complete the guitar wiring diagram order form with your custom specifications and our designers will do the rest. Our custom diagrams are easy to read, affordable and delivered by email for FREE!