1995 Jeep Grand Cherokee Laredo 6-cylinder coil not getting any fire into it have replaced crankshaft sensor?

It is also common to be the Cam Pickup Coil inside the distributor under the rotor.

A common cause is a burned out fusable link. this a wire that acts like a fuse. If you have no power to the coil with key on the fusable link is open. you tell which one it is by pulling on the ends of the fusable link the one that streaches is the one that is open. they are color coded to tha amperage rating make sure you replace with the correct size and not with a normal wire as this coulsd cause the wires to melt and then you have a whole mess of other problems.