One problem related to dash wiring has been reported for the 1996 Mercury Villager. The most recently reported issues are listed below.
Head control module wire harness in back of the dash panel burned up. Wires were completely melted. Several electrical related problems: battery failure, open circuit in main engine harness to egr solenoid, overhead light failed, power door locks were operating by themselves, power locks would not lock with the switch, rear windshiled wiper switch failed and rear wipers would not stop even after fuse was removed, sliding door would not open with remote or switch. Check engine light illuminated. Power steering pump noisy and was replaced. Air conditioner motor failed. When locking vehicle with key, horn would operate, keyless entry had just been installed.