Aaronsc400

i think it maybe do to the factory security but not sure when i turn the key i get power but no starter click? but when i have somone sit in the car and have them hold the key in the start position and take off the positive and keep taping the positive to the battery terminal i get the start to crank i have to do it a few times to get the car to start it didnot start this till i set the alarm off i cant seem to disarm it from the door with the key but when i but the key in the ignition it goes off but the car wont start please help?