A complete warning package on a white GMC Sierra crew cab, built to disappear when it's off. Nothing sits on the roof: the main warning is an interior deck light bar tucked up under the windshield header, so the truck reads as a clean personal pickup parked at the curb and lights up the whole front when it's needed.
Around the truck, surface-mounts sit low in the grille with a green LED below them, a full-length amber strip runs along the rocker under the cab doors for side coverage, and the rear carries its own warning for traffic behind. A compact siren and light control head is mounted within reach of the driver and runs every pattern from one keypad, with the siren speaker and all wiring concealed. Each run was routed through the factory grommets and loomed so nothing shows in the engine bay or the cab.