I have a 1998 ford windstar mini cargo van and my doom lights won't go out when I shut the doors, the courtesy light switch may be bad I was told by a friend so I went and bought one and can't see where it go's to I looked all under the dash and can't see anything that even looks close to what I bought. I double checked the part number and it's the right one but where does it go to? Any advice would be helpful