I want to describe 2 mysteries in hopes that any of youse will solve. There is a beige wire that was connected to the car battery when I first got the car. The wire when disconnected kills the power for the car alarm, internal roof lights, and radio. What kind of ****ery has the old owner been up to? I also would like to know where the car horn is located? Because the horn is not working and perhaps the old owner removed it. I also want to know what that little plug next to the AIr Filter is. It's disconnected and I'd like to know why! I appreciate it

 

I also forgot! I drive a Ford Escort 98 SOHC 2.0