I think they should be there too
But you might wire up the pci bus cable,,,
Upgrading to power or power/heated seats (Laredo models)
Power or power/heated seats can be added to most WJ's that came with standard seats. The entire seat assemblies will have to be exchanged. All seats use the same bolt pattern so the installation fit will always be exact. For power seat wiring, all that is required is a constant +12V wire and a Ground wire. Vehicles that came without power seats are not pre-wired. For the Ground wire it is probably best to run it over to the center console area where it can be attached to a metal bracket. Do not drill a hole in the floor below the seat. For the power lead, run a wire with an in-line fuse up to the fuse panel area where you can find a + wire to tap into.
Power / heated seats (leather only)
For 1999-2004 Grand Cherokees that came without heated seats the wiring is a little more involved as the heat function is controlled via the PCI Bus and you will be hooking up two seats. Two heated seat switches will have to be purchased and installed in the center bezel. Some center bezels have the holes pre-cut with blank plates installed while others may have to be trimmed out with a dremel type tool. Some owners elect to just purchase a new center console bezel assembly as there are several choices available (with and without ashtray for example). See Interior Trim for a list of part numbers for center bezels.
NOTE: A factory pre-wired harness for the heated seat switches is located behind the center lower bezel in most if not all models that did not have this feature. All you have to do is plug the two harness plugs into the two heated seat switches.
Power / heated seat wiring at the seat location
For the driver's seat, Pin 4 (red) is the 12V lead and Pin 5 (black) is the Ground.
On the Passenger seat Pin 3 (Red/LB) is the 12V lead and Pin 2 (black) is the Ground.
The Ground wires for the two seats should be run together to one Ground location. The power wires for both seats can be hooked together and a single wire with an in-line fuse run to the front fuse box area.
The PCI Bus wire is run from the drivers seat to a location under the dash where you can tap into any PCI wire. Most owners have just tapped into the Bus at the radio harness. On 1999-2001 WJ's, a single separate PCI wire plugs into the back of the radio. For 2002-2004 models tap in to Pin 14 of the 22-pin radio harness. Radio wiring diagrams can be found Here .
In addition to the PCI Bus, Power and Ground, four wires must be run between the drivers seat and the passenger seat, as shown in the table below: