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VISION AND SIGNALING
Being able to see the road ahead is a prerequisite for safe vehicle op-eration. This means that your lights and windshield wipers must operate effectively. And, of course, other drivers depend on your lights to tell them where you are and which way you are going.
In inclement weather, your driving vision is impaired. Here is where your windshield wipers become one of the most important safety devices on your car. Lighting, too, is doubly important. In bad weather, lights are frequently used during daylight hours as a safety device. This does not increase your own vision as much as it makes your car easier for other motorists to see.
Most problems in a car's lighting system;which is part of the electrical system;are caused by burned-out bulbs, fuses, or flasher units. Actual short circuits are much less frequent. This is a happy state of affairs for you, the novice mechanic, because bulb, fuse, headlight, and flasher replacement jobs are well within your capability. Instructions for these jobs follow in the pages ahead. When it comes to aligning headlights, you should take your car to a professional mechanic. He has the special tools and the expertise needed to handle such jobs. In this chapter you will also learn how to change wiper blades and wiper arm assemblies.
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