American Expedition Vehicles JK Hemi Builder Kit - Installation Guide for 07-11 JK Wrangler - Manual (Page 15)

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Part III: wiring harness installation
Every AEV HEMI JK Wiring Harness is 100% computer checked for quality and accuracy before
shipment. The harness is installed and routed the same way as a factory Grand Cherokee or
Commander Powertrain Harness; if more information than what is provided in this manual is
required, please refer to any 2007+ WK or XK Factory Service Manual.
a. harness to powertrain
1. Lay out the harness on the ground as shown, with the PCM Connectors to the left when
viewed from the driver’s position. The injector connectors will be towards the front. Orient
the harness next to the assembled powertrain so that the routing can be easily seen. The
part of the harness that connects to the powertrain is an “H” shape and is designed to have
the center portion (the bar) of the “H” located and centered at the top of the area where the
engine and transmission interface.
2. Install the braided ground strap from the right to the left and then leave the loose end so
that it will attach to the firewall stud on the right side of the vehicle.
3. Begin plugging in the left side injectors and coils, proceed around the front of the engine
and down to the knock sensor.
4. Route the right side of the injector harness forward and then down behind the alternator
plugging in the Cam, Crank, Oil Temp, and Knock sensors.
5. Plug in the left side of the transmission, including the Input Speed Sensor, Solenoid Assem-
bly, Out put Speed Sensor, and Transfer Case Mode Selector.
6. Continue by installing the right side of the transmission by securing the O
2
Sensors and the
Pressure Transducer.
7. Secure all O
2
Sensors and zip tie the harness securely to the powertrain. Do not over
tighten zip ties—you may damage the harness.
8. Carefully route the starter wire as shown. The ground stud located behind the starter is
reused from the 3.8L.
9. On 6.4L engines, connect the Variable Runner Intake. Other engines be sure to zip tie this
connection to the harness so it is out of harm’s way.
10. Re-use the factory 3.8L Battery Harness.