Carputer Wiring Tips
Although not a high-tech part of the installation, it is vital to ensure the wiring installation
is done properly to ensure safe and interference-free operation. Some wiring tips are
shown in the box below.
- Calculate your power usage and select the correct gauge of wire to use.
Please note that it is perfectly OK to use a thicker cable than shown. Thicker
cables minimise voltage drop. Remember to include the length of both the
positive and the negative wires when considering cable runs. For help with cable
selection, go to the carputer wiring page.
- It may help to avoid "noise" caused by a
ground loop if you run both
positive and negative wires to the power supply directly from the battery.
Whether you do this or not, you must ensure you have good clean earth connections.
- Factory fitted accessories always have fuses fitted, and your car PC should
have the same protection. This will not only help prevent short circuits damaging
your PC, but also remove the chance of starting an electrical fire.
Your main fuse should be as close to the battery as possible (within 40cm of
the positive terminal). Modern cars operate with a negative earth system,
because using a positive earth would mean the metallic chassis and body would be
more prone to corrosion.
- Use a fuse of the correct rating. It is fine to use higher rated wires, but
- Ensure all wiring is securely held in place to minimise the risk of loose
connections and short circuits. A tidy installation is a safe installation.
- Use grommets where your wiring goes through any holes.
- Keep power wires separate from signal and audio wires to minimise electrical
- Use proper soldered or crimped connectors wherever possible. If soldering in
the vicinity of the car, remember to keep the soldering iron away from fuel
- Remember to insulate any exposed joints with electrical insulating tape or
heat shrink sleeving. Any joints exposed to moisture should be protected with
Self Amalgamating Tape.
- Be methodical and don't cut corners. Double and triple check all the
joints before connecting the power for the first time.
"These wiring tips stand good for any auto electrical installation."
- Get help with cable selection.
- what you need to know.
Build Your Car PC
is the place to start configuring
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