question about a idiot light

i recently bought someone else problems .
i just got done with replacing the ignition module on my windstar due to
missfire on cyl # 2 .

now i am getting a wierd idiot light that stays on while the car is running.

the light looks like a exclamation poit
the car is a 2001 windstar
if you know what sign this is please let me know what it is for.

just so i know wether to worry about it or not.

Have you checked your owner's manual, there are a couple of symbols in there that have exclamation points such as the brake system warning light and the exterior bulb warning light. The brake warning light I think has the word brake in it so if yours doesn't it is probably indicating an exterior bulb is out. From the owner's manual it looks like that warning light would appear in the bottom right next to the door ajar light.