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1st choice
Wire splicing connectors are a good choice if you're familiar with your
car's wiring and know which wire to tap into.
These are easy, secure, quick to hook up and let you tap into a wire without
having to strip the wire bare. It has a pin inside that pierces the wire to the center.
Here's a link to the manufacturer's site:
http://www.posi-lock.com/posiplug.html
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2nd choice
These are easy, secure, quick to hook up and let you tap into a wire without
having to strip the wire bare.
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3rd choice
If you're not sure which wire to tap into under the dash, you can get 12 volts
at the fuse box directly. For cars that use blade-type fuses or mini
blade-type fuses, this is an excellent choice. This product allows you to use
an existing fuse location in the fuse box to add a separate, fused
external fused accessory. It makes for an easy, professional installation.
The companies Littelfuse and Bussman make this type of product but
they're pricey
at around $6.00 to $9.00 each. We've found Auto Zone has the best price on
them. If you are unable to find them locally, you can purchase them from us
at our cost. Our cost is $6.00 for the Littelfuse 'Add-a-circuit' product for
blade-type fuses and $7.00 for the mini blade-type version. If you'd like,
we'll solder them onto the wiring harness at no charge.
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4th choice
Posi-lock type connectors are good when you have bare wires to connect
together. They give you a solid connection and can be unscrewed and reused
at any time.
To use this, though, you'd have to take the wire that you want to tap into
and cut it in two and then strip the wire insulation off of both ends. We
prefer not to cut a wire in two to tap into it.
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5th choice
This crimp connector is the same in principle as the posi-lock connector
above. Here you use a hand crimping tool to squeeze the wires together in the
connector.
This works fine but, again, as with the posi-lock above, we prefer not to cut
a wire in two to tap into it.
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DO NOT USE THESE !!
We have tried these blade fuse "taps" that push into the fuse box with the
tap piggy-backed and wrapped around the end of the fuse. It works fine until
the day you may want to remove the tap.
They really stretch out the receiving
terminal in the fuse box and when you reinstall the fuse without the tap, the
fuse fits very loosely in the fuse box and can actually fall out !
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This connector is the same in theory as the splice connector (2nd choice
above) but here you can quickly disconnect from it to move the GPS unit to
another car if you'd like.
We use these to move a demonstrator Real-Time GPS unit amongst several
cars and they work well.
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