Recently replaced heater core on the durango. After reinstalling the dash and connecting the battery- the engine would not start. Also the security light comes on after the key is turned off and removed from the switch. this happens about 15 seconds after key removed. I have double checked all wiring connections that were taken apart when the dash was removed- they all are connected fine. Is there any procedure for resetting the security system? I tried locking and unlocking the drivers door with the key and it had no affect on the security light coming on. The battery was disconnected for a couple of days. Also the odometer flashes with key on and the gauges don"t read. Any knowlegable replies would be greatly appreciated!!