About a year ago, my headlights stopped working. So I used my DRL's... When my DRL'S stopped working, I started to use my brights... Now, I have no head lights at all. My parking lights work fine, my dash lights work fine, the only problems is the lights and yes I did check fuses and lights. I'm wondering if it's the dimmer switch or he multi switch...
There are a couple other componets you are probably not aware of . The daytime running lamps module an the DRL relay . Rather then guessing or wondering as to the problem , leaning how to test electrical circuits using a wiring diagram an a DVOM - digital volt ohm meter is the preferred way to fix automotive electrical problems . This is how professional technician's do it , well a few probably . They'er are a few that just replace part's . Here is a web site for free wiring diagrams http://www.bbbind.com/free_tsb.html
Enter your vehicle info. year , make , model and engine size. Under system click on lighting , then under subsystem click on head lamps .Click the search button ,then the blue links one at a time . Watch these videos
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts
Electric Testing Techniques You Need to Know
Now get out there an test .
SOURCE: 99 chevy 1500 with DRL feature; headlights won't
change the headlight switch!! itself its broken inside the unner contacts
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