The all-new WK Grand Cherokee debuted in 2004 for the 2005 model year. The first generation of WK is powered by 5.7-Liter HEMI® V-8 Engine using aluminum cylinder heads with hemispherical combustion chambers, which produces 330 hp (246 kW) @5000 rpm and 375 lb-ft (502 N•m) @4000 rpm.
The following electrical system circuit and Cable Harness Routing apply for the 2007 Jeep WK Grand Cherokee including 3.7L engine, 4.7L EVO, 5.7L and 6.1L engine series. This article actually is part of the components diagram of the vehicle. Here you will find detail description of each electrical parts and components as well as the location and illustration/pictures of the WK. The electrical system consists of starters, alternators, modules, relays (power distribution, junction block, and circuit breaker), sensors, single board engine controllers and powertrain control modules, switches (instrument panel, console, drive train, and body), horns, battery tray and cables, front/rear and courtesy lamps, wiring of engine and related parts, headlamp to dash wiring, instrument panel cable harness routing, air bags system, spark plugs cable and coil, etc.
Find more information about 2007 Jeep Grand Cherokee WK Electrical System Circuit and Cable Harness Routing here on page 93 – 146. (source: scribd.com, wikipedia.org). Other Jeep Wiring Diagram you might be looking for.