I was replacing my headlights and notice a loose wire. Does anyone know where this is connected?

 

You should post in the proper model forum. You don't mention what car, model, year etc. The forum admins will probably recommend you post your question to the proper sub forum for your car. Then you can be helped properly.

 

Welcome to the forum wmlodynsky,

Is it a Jaguar?

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham