29 May 2006

Running the System Wires, Pt 2

Written by Yours Truly ( )
Published on May 29th, 2006 @ 09:57:02 pm, using 331 words, 1715 views

Categories: the hardware, cables & wiring, power

If you missed the first part of this story, you can read it here:
Running the System Wires, Pt 1

Continuing with the wiring run, wires were fed down the length of the centerline of the car. These wires provide:

• power to the LCD screen, which will be powered from a standard computer molex connector via the OPUS120, which will provide a regulated 12V current to the screen
• grounding for the LCD screen, which is connected to the same molex connector as the screen power
• the ACCessory wire for the OPUS 120 ignition signal
• a pair of 3.5mm Audio cables for connecting to the MIC and LINE-IN connectors on the computer system
• a pair of USB panel-mounted connectors
• VGA cable for bringing the video signal to the touchscreen
• a pair of RCA cables with video for connecting to the VIDEO input of the screen, and for splitter connection to the Alpine headunit

The main RCA Audio cable is a 4 meter length of triple-shielded oxygen free RCA cable, and was run down the passenger side of the vehicle, keeping it as far as possible from the assorted power cables.

[Continued...]

With the rear seats removed, running cables to the trunk is a simple matter. Here we see a USB cable, and the pair of 3.5mm audio cables lying across the underside of the seat floor, along with a spare length of 14AWG wire for future power requirements...

...and here we see the remainder of the wires for power, ACC signal, USB, etc.

Using the dremel grinding stone, I cleared away the surface paint from the chassis and then drilled a 1/8in hole through the frame. Using a self-tapping screw, I connected the ground wires for the OPUS120 and the VOODOO distribution block, securing them to the exposed metal of the vehicle's frame.

Here is a shot of the exposed wires in the trunk, just waiting for the system to be hooked up.

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mini-itx, CarPC, Carputer, mobile computing, Acura, touch screen, electronics projects, car battery

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