No power when it was running

My 96 nissan pathfinder le had to have the distributor replaced. Now with the good distributor it wont starat tho it will crank over strong. I have chwcked for it getting fuel, it is. And it has spark to the distributor. Ut not sparking at the plug. It has a new coil and ignation circut in in. It has a security sys and the operatibg indicator dosent lite up at all tho and it doesnt blink either. Nothing at all to show if its armed or disabled. Friend told me if we can get the indicator to lite up the thing will start. What do i do to reset or reprogram the security system to tell it that its not bn stolen so car knows its ok to start???? Help me to remedy this any one please please please!!!