I make frequent references to the following, Vacuum and Electrical Troubleshooting Guide, Service Manual, and the Archives - you WILL need all of these if you plan to do any work yourself or an informed customer at your local service facility.
Theses are invaluable resources.
Let's start at the front of the car. Check all front lights, Headlamps, Parking, Side Marker, Turn Signal, Fog Lamps. Headlamps - are lenses yellow. Fog Lamps - working, broken lenses. Any broken lens can be expensive, if Fog Lamps broken probably best to remove complete assembly and replace with after market.