1999 lincoln navigator aga 2701

i have installed an aftermarket generation two way rs/security system works great love the distance but i have one issue with my 1999 lincoln navigator once the remote start is activated the 4x4 light flashes it continues to flash even if the key is put in the ignition and u press the brake to deactivate the rs if i press the brake when i get in the system shuts down then i start it with the key as normal no flashing 4x4 light i hope im not the only one who has had this happen need a second opinion im leaning toward tapped into wrong ignition or accesory wire just wierd any ideas are good ideas to me thanks in advance for the help