ignore alarm guy jim I don't get hang overs,safer to remove all power you don't say if you want the door contact to be an entry exit zone,if you do then wire it up to zone one,(that's the norm for ee)remove one wire from zone one,connect one wire from new contact,to the wire you took of the panel,then fit the other wire from the new contact to zone one on the panel,thev switch wires go to the silver contacts on reed switch,the tamper wires are twisted together on the door contact ,you cant miss them
gts, May 2014