Jeep Repair: starting problem, jeep cherokee, safety switches

Question
This did help somewhat, but the car is automatic and before we put in the ignition switch the car cranked and came on eventually, after leaving the key in the on position for a few minutes.  Now the car cranks and I do not hear the fuel pump come on and the mechanic claims the relays are not coming on, did he put the switch in wrong?  He does not know what to do to correct this, it is worse than before.  He claims he hears the relays click but when I turn on the key the relays shut off is that possible.  The car is sitting and cannot be used at this time.  
Any ideas would certainly be appreciated.
Thank you so much for your help.
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Followup To

Question -
I have a 1993 jeep cherokee with 143,000 miles on it had the neutral switch replaced, ignition switch replaced and replaced relays.  The car cranks but does not start.  The mechanic told me that the relays are not coming on but if I leave the key in the on position eventually I can hear the fuel pump, the check engine light on the dash lights and the car will start.  After he replaced the ignition switch I cannot get it to do even that.  Help!

Answer -
The 93 Jeep Cherokee has a few items I'm not as familiar about as I am on the newer ones.  I remember some of the older range/neutral safety switches on the autmotics were kind of sensative and if not properly lined up on installation then you will not be able to crank the car.

Also, not only can the ignition switch fail but the key cylinder could break as well so there's a possibility that the key is not forcing the switch in to the position to allow power to the fuel pump/asd relay and only allows it to feed power to the starter.  

If this is an automatic car I would suggest holding the key in the crank position while moving the gear selector through the gears.  If the engine attempts to start then your Range sensor may be out of adjustment causing the lack of power to the other components.  

If the jeep is a 5 speed then you should have a clutch/safety switch which normally is a two wire switch.  Jumping the switch will defeat it allowing you to crank it without having to press in the clutch which would rule it out as a possible cause.  

In both of these two starting suggestions make sure the parking brake is set and the vehicle is either not in gear (5spd) or you have your foot on the brake (auto) to make sure the car does not try and roll forward or back.

Let me know if any of that helps and I'll see if I can assist you further.
Doug

Answer
It sounds like the switch, provided it's the one on the transmission for the gear, may not be lined up properly.
He's going to have to do some wiring diagram investigation and put a multi-meter to use in order to get it lined up properly or find another means to have someone else finish the job.
Doug