First step is to pop that plug off and measure the voltages on the terminals. One must have 12 volts in the low-beam position, and a different one will have 12 volts in the high-beam position. Best is to use a test light to check those voltages but if all you have is a digital voltmeter, that will work too.
SPONSORED LINKS
Tuesday, January 6th, 2015 AT 8:30 PM