Forum Discussion
CA_Traveler
Mar 17, 2014Explorer III
When checking with a voltmeter:
1. Turn on the lights as this prevents false readings due to high resistance opens.
2. Connect the voltmeter to a frame ground and NOT some ground wire.
A 12V test light is also a good tool for this kind of problem, perhaps better since a light is usually a more visible indication of 12V or not.
One easy check is one of the light bulbs. If you have 12V on both sides of the bulb then then you have a open ground. Otherwise you'll need to find the faulty component which includes fuse, CB, switch, wire or connector. A wiring diagram, fuse or relay location would be very helpful.
1. Turn on the lights as this prevents false readings due to high resistance opens.
2. Connect the voltmeter to a frame ground and NOT some ground wire.
A 12V test light is also a good tool for this kind of problem, perhaps better since a light is usually a more visible indication of 12V or not.
One easy check is one of the light bulbs. If you have 12V on both sides of the bulb then then you have a open ground. Otherwise you'll need to find the faulty component which includes fuse, CB, switch, wire or connector. A wiring diagram, fuse or relay location would be very helpful.
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