95 Concorde trunk opens when lights go on!

It's maddening: when I turn the headlights on, the trunk pops open. This also can happen when the heater is activated. The turn signal dash lights glow dimly and the signals don't work.

This started happening shortly after I heard a nearby lightning strike.

A half-hour search by the dealer revealed nothing. I've been over much (but not all) of the wiring. It's been suggested that a computer may be malfunctioning.

Any ideas? And I've never dealt with the car's computer -- where is it, and how easy would it be to replace with, say, a pull from a junkyard?

-- Byron

If it is a computer problem, the Body Control Module, it controls the trunk opening and if you have ATC, it also controls the mode doors opening up. If it's acting up, you can't go to a junkyard and buy another one, the BCM on your car contains the VIN, mileage and if you have an alarm, all that information is contained in your BCM; and finding a used one won't work. Try checking your grounds, especially for the turn signal if it's flashing dimly, make sure that it's clean and not corroded/damaged in some way or another.