1999 JEEP CHEROKEE SPORT 4.0 ...cranks around 10 seconds b4 starting...any suggestions?

You mean it cranks but does not start, right ?
The NoBus on the display means the cluster is not talking to the computer. That could be a wiring problem or a component problem.
Have you checked the engine computer for trouble codes ?

Most likely is intermittent in starter solenoid relay

Next most likely is key switch start connection intermittent. a tester will have to be used to find where the power is being lost from the start terminal of ignition switch to starter solenoid pilot connection to the main starter output power from solenoid to starter main contactor.

computer or fuel pump check fuel pressure and decide from there

crank shaft sensor just had this prob its located on top of trans

Based on what you have replaced I would check the fuel filter and if possible check the fuel pressure at the rail.

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probably the turn signal switch

this is a fuel problem, fuel pump is bad, or fuel filter is clogged up. check to see if fuel pump is working. check fuses and relays if it does not work. to rule out a bad fuse or relay.

Figures...I'd use 2&3 as b&c Open reading means that with the meter set to ohms and turned on, the meter should read the same connected to the terminals as it did before you connected it.

Seems to be a chronic problem with crank position sensors... On yours it is tested between b&c terminals and should have no continuity there. (should show an open circuit if good)

It could be your Crank Shaft Sensor. That's what it was on my 99 Cherokee Sport the first time that happened.