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The BMW Range
5 Series
How to clean e34 headlights?
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<blockquote data-quote="jarance" data-source="post: 41877" data-attributes="member: 21"><p>Incadescent bulb are not affected by polarity... Suspect that you have an earth or necative problem... </p><p>To check...</p><p> </p><p>1. Remove the lamp from its holder and remove the bulb.</p><p>2. Check the resistance of the bulb with an ohm meter. if there is some reading the bulb is OK. Replace the bulb if open circuit.</p><p>3. Turn on the ignition to ON wothout cranking. Turn on the headlamp.</p><p>4. Use a voltmeter to measure the voltage from the terminal (where the bulb was remove) to any part of the car body. The voltage should be 12 VDC.</p><p>5, If there is no voltage , check the fuse.. You might a fuse blown.</p><p></p><p>6. If there voltage , off the ignition and put back the bulb. Make sure that the earth wire is also connected. </p><p></p><p>7. After reassemble, check the light again.. good luck./</p></blockquote><p></p>
[QUOTE="jarance, post: 41877, member: 21"] Incadescent bulb are not affected by polarity... Suspect that you have an earth or necative problem... To check... 1. Remove the lamp from its holder and remove the bulb. 2. Check the resistance of the bulb with an ohm meter. if there is some reading the bulb is OK. Replace the bulb if open circuit. 3. Turn on the ignition to ON wothout cranking. Turn on the headlamp. 4. Use a voltmeter to measure the voltage from the terminal (where the bulb was remove) to any part of the car body. The voltage should be 12 VDC. 5, If there is no voltage , check the fuse.. You might a fuse blown. 6. If there voltage , off the ignition and put back the bulb. Make sure that the earth wire is also connected. 7. After reassemble, check the light again.. good luck./ [/QUOTE]
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