Why theft alarm system in 1991 Chrysler Imperial not let car start?

If yours is like Mine? It is defective. Need to take unit out. It is behind Glove box. Have to remove it to get it out. Mine started as a Dimmer Switch, Headlight Switch. Then all systems shut down. Seats would move all the way Back & flat. Windows & door locks Radio inoperative. Plus have 4 trouble Lights. Catch the Drift