1995 jeep yj

Hi ! i have 1995 jeep yj. and are having trouble starting it. when you try to start it she turns over and i hear a clicking noise from the auto shut dn. relay so i was told,you turn the key back and try it again and it fires and runs fine . does anybody know what powers up the shut dn. relay and can i bypass this if need be. the engine is a 4.0 litre. so far replaced computer,fuel pump,crank sensor,. thanks for any help. 02wgn:cwm27: