Connecting The Wires - CarNetix PSU-PC12 Installation And Operation Manual

2.3 Connecting the Wires

After you have set the jumpers for the options and performance of the PSU-PC12 you can connect
the input and output wiring. The steps outline below should be followed to insure proper operation
of the PSU-PC12 and Xenarc SC3.
Step 1 – Connect the input power and ignition to the PSU-PC12.
Use heavy gauge wire directly connected to the battery (via 15A fuse and distribution block).
4-8 GA wire is recommended if the SC3 runs a 2-3GHz processor. 8-10 GA wire is
recommended for lower speed processors. Using wire that is too small will cause the SC3 to
not survive engine cranking.
Step 2 – Connect Ground to the PSU-PC12.
We recommend that you either run another wire directly to the battery, or connect directly to
the car chassis for grounding the PSU-PC12. If you run a wire to the battery, make sure it is
that same size as your +12V battery wire used in step 1. If you run a ground wire to the car's
chassis, make sure to find a secure ground that is not corroded or painted and use the same
size wire as your +12V battery wire used in step 1.
Step 3 – Install optional Valet Switch.
A simple SPST switch installed in series with the ignition wire will allow you to manually
disable the PSU-PC12 so that it does not come on when the ignition is turned on. This is
optional and for convenience only.
CarNetix PSU-PC12 V1.1 Installation Manual
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