The 2018 PIU uses a high-output 240-amp alternator (standard on most units). The diagram will show two distinct paths:
: Ford provides Police Modifier Guides specifically for vehicle modifiers. These manuals, such as the 2017 Sedan and Utility Modifiers Guide (applicable for early 2018 models), include wiring reference excerpts for police-specific equipment like battery junction boxes and wiring package options. Key Wiring Systems 2018 Ford Police Interceptor Utility Wiring Diagram
to drive relays and manage outputs (e.g., siren, lights) via 1/2A, 12V circuits. Blunt Cut Wires: The 2018 PIU uses a high-output 240-amp alternator
: This system manages the four steering wheel rocker switches, which are often pre-configured for latching or momentary functions. Specialized Upfitter Switch Wiring Diagrams explain how to use 4-pin relays for these auxiliary circuits. lights) via 1/2A