I need to fix the A/C in my 93 hard top. With the air on my idle come up a few hundred rpm but the compreser does not turn over so i guess i should start with the relays. Is there a way to jump them? The system has some pressure in it as i pushed the pis and it hissed. If i have to rebuild the system can i just buy hoses for R134 to run that? Can i get parts from a newer tracker to run the new stuff?

Did you check the fuse for the ac? Under the hood, attached to the other relays in front of the battery.

I need to fix the A/C in my 93 hard top. With the air on my idle come up a few hundred rpm but the compreser does not turn over so i guess i should start with the relays. Is there a way to jump them? The system has some pressure in it as i pushed the pis and it hissed. If i have to rebuild the system can i just buy hoses for R134 to run that? Can i get parts from a newer tracker to run the new stuff?

Even though the system has pressure in it, it doesn't mean it is enough pressure to activate the compressor.  There is a pressure switch (probably located on the drier), that senses the system pressure and if it is too low, it won't allow the compressor to turn on (which is good, because it keeps the compressor from getting damaged).  You can unplug the wiring connector from the pressure switch, take a jumper wire and short the 2 wires together in the wiring plug, then turn the AC on.  If the compressor runs, then you know the issue is low system pressure, or a faulty pressure switch (faulty switch isn't likely).  Don't run it for very long, with the jumper in place....you just jumper it to check to see if it is a pressure issue.
It could also be that the compressor is locked up, or the electromagnetic switch on the front of the compressor is bad, or the AC relay or wiring, or fuse, or switch is bad.  But I would look at system pressure being the issue first.

Oh, and if you decide to convert to 134a, you don't need to change hoses.  Just flush the system, to get all the old refrigerant oil out (to do it right, you need to take all the connections apart, take the condensor and evaporator and compressor out....flush everything with brake cleaner and compressed air), put the new valves on, replace all the orings with the 134a type, replace the drier, vacuum the system down, and refill with the proper amount of new oil and refrigerant.  That is the procedure I used on my 92 and it worked perfectly.  There are 4 orings in the top of the compressor (under where the hose attaches to it)....don't forget these.

So i started to look into this again. I jumped the switch on top of the dryer a can here the relay click but the compreser does not turn over. So what is the next step and what is the hi and low side hoses?

What you should be hearing, when you jumper the pressure switch plug at the drier, is the compressor clutch clicking.  If it clicks, the compressor should turn (the center of the clutch will start turning).  If it doesn't, then I'd suspect the clutch is bad.
The high and low side hoses are just that.  The high side hose is where the high pressure is (200+psi), the low side is where the low pressure is (30psi or so).  It is similar to a power steering system.  The high pressure comes from the pump (compressor) into the power steering box (evaporator...the box under the dash).  Then out of the other side of the box (evaporator) is low pressure return back to the reservoir then pump (condensor then back to the compressor).

I guess i will chase down some wires and rule out a bad conection before changing out the comp. clutch. Good thing i still have the parts tracker that had working A/C.

" faulty switch isn"t likely."  I wouldn't rule it out I just had to replace the one on my 95.

well jumping the switch i can here there relay click but the compresser doesnt turn over. maybe i will to tap it as it on.

Troubleshooting tools don't have to cost a lot of money - a 12V lamp with two wires is all you need - clip one end to the engine block and the other end to the compressor clutch wire - does the lamp light when the relay clicks?

No?  There is no power to the clutch coil it won't engage.
Yes?  The clutch coil is powered, it should engage - check see if there is a thermo sensor on the back of the compressor, sometimes those fail - you can check that with the test lamp too - just connect the wire to it - the lamp should not light.

Dont dare do what you're doing. Jumper can cause big problem to the unit. Check ac repair Pittsburgh for assistance.