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Electrical Systems - House
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One of the most widely used tools for testing a 12 Volt problem is the test
light. Test lights come in a host of varieties, such as a light bulb with a probe
and ground clip, to the more elaborate electronic ones that measure a wide
scale of voltages and perform a variety of functions. A VOM or Volt Ohm
Meter is used to perform a multitude of tests. It is generally used when exact
values are needed for evaluation. These meters come in an analog or digital
format. Either of these two testing tools may be used, depending upon personal
preference. If a 12 Volt light is not working, the test light may be better suited
for this. In the case of a charging system problem the meter may be the tool of
choice. In any situation the testing tool is an invaluable piece of equipment
when it comes to determining an electrical problem.
If it is necessary to use testing tools, use precaution and consider three
things. First, recognize when the problem is beyond your skill level. Nothing
will create more problems than being armed with tools and going in an
unknown direction. Good intentions can lead to major problems. The second
item to consider is if something will cause more grief by being dealt with now
than if it were left alone and repaired by a professional at a more convenient
time. Items that seem as if they should only take a few minutes, may end up
taking an entire day. The third item to consider is whether or not the current
situation may be potentially dangerous if left to be repaired at a more
convenient time.
NOTE: Check all related fuses before assuming you have
encountered an electrical problem or situation. Spare fuses
should be kept on hand and can be purchased from auto
parts stores. A fuse description label is on the distribution
panel cover.
WARNING: If a fuse blows replace the fuse with same
amperage rating and type. Installing higher amperage fuses
can damage the wiring or the item the fuse is protecting, or
may cause a fire. If the fuse repeatedly blows after replac-
ing do not continue to replace it. Have the problem diag-
nosed and corrected by a qualified technician.
Tools of the Trade
Know When to
Say No