Voltage testing is the way to find problems like this . or voltage drop testing . Find a wiring diagram an trace out the circuit , Don't go by someone said something about a green wire . Watch these videos on youtube
Electric Testing Techniques You Need to Know
The Trainer 32 How To Read An Automotive Block Wiring Diagram
If you want to fix electrical problems need to learn how don't guess or go by some guy talked about a pinched green wire .
How to read an electrical diagram Lesson 1 Then find a wiring diagram at
http://www.bbbind.com/free_tsb.html Enter your vehicle info. year , make , model an engine size . under system click on lighting , then under subsystem headlamps . Hit the search button ,you'll see three links . Click on the second , this is the DLR diagram , you'll see a drl relay , a BCM - body control module , DRL fuse 10amp located in the under hood fuse box . IGN fuse 10amp supply's B+ voltage to the control side of the drl relay . With a DVOM - digital volt ohm meter test voltage supply .
Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts If you want to fix electrical problems on your vehicle you need to learn how ! Or leave it to a professional like me ! I've been doing it for over thrity years . These resources i have listed , wish they would have been around back when i first started .
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