grim

i bought a 96 zj v8 limited fully loaded for 500$ . after i replaced every light on it and the windsheild i put it on the road . i took it for a test drive the first day and it ran great nothing wrong at all . the second time i took it out ,it started shacking ,running bad and the alarm came on and i dont have the lil button thing.so get back to the house we pop off the drivers door panal and cut the purple/yellow wire and ground it . then the dome lights dont go out .i do a lil reading and fix that .lights go out but in 20 mins they come back on . i checked the dome switch and they go off .look 20 mins later and they are on again . so i said to hell with it and shut them off again and went to bed . well the next morning the battery is dead and here i am now asking for help . my buddy checked all the door switches and they are all good . what else could be causing this ?

thanks
billy