All AWD production EVs use at least two motors, simply to have at least one at each axle; this avoids a shaft down the length of the vehicle, and avoids a differential between axles. A few EVs (and hybrids) use two motors at one axle - a single motor per wheel - mostly to allow them to independently control the torque applied to each wheel, partially to avoid the axle differential, and perhaps to get twice as much power using available motors and inverters.is 2 or 3 motors a lot? the few swaps ive seen for these always have dual motors. and tesla uses dual and tri motor configurations in all vehicles. I just figured i needed that many for this plan.
Most DIY conversions use a single motor, even for 4WD, because the builders find that easier and probably less expensive.
Tesla has a single motor in 2WD models (assuming that they still sell some of the those), two motors (one per axle) on most AWD models, and three motors (one in front, two at the rear) in the highest-performance models (only the Model S Plaid so far, but planned for the Roadster and whatever else they might eventually build). The Semi - if it is ever produced - will have one motor per rear wheel... with the motors installed right in the beam axles.
In the Cherokee, do you intend to keep the beam axles front and rear, or are you planning (or willing) to replace that with independent suspension at front, or both? If you still have an original beam axle you can only drive it with one motor, so with both original beam axles you have two motors at most. Motors mounted on beam axles are possible, and would certainly work, but are not desirable in car or SUV. A beam axle with two separate inputs (pinion shafts) to connect two frame-mounted motor to one axle would be interesting, but custom, strange, and not worthwhile.