1997 Jeep Cherokee Will Not Start

Hi - This car has sat unused for a few weeks here in Yuma AZ. There was nothing wrong with it when parked. When I went to start it, the battery appeared to be dead. Charged it up and still wouldn't start (the engine was cranking, just wouldn't "catch". After wearing the battery down a couple of times, used the "start" feature of the charger. Then, the engine wouldn't even crank, but a "ratcheting" noise came from the starter!

OK - replaced battery. Dome lights now turn on when door opens. Turn the key to start, hear a "click" and power goes out, no cranking or anything. After about 5 minutes, the power magically returns (dome light and instruments on!) Turn the key, same result. Hear a click and the power goes out.

Could this be the "starter relay" in the "power junction center" or?? I really don't have much $$ to spend on it, as the intention is to sell her as soon as I can get it started! ANY assistance gratefully appreciated!

Gunny M