Hi all,
This was sent to the WestField_Eleven@yahoogroups.com by a list member.
It looks like a simple way of wiring a car by multiplexing.
Esko

Subject: [westfield_eleven] Isis Power, a wiring solution.





Part of my work is to keep up on Cable programming, and I happened to see an
interesting automotive wiring solution on Speed's "Two Guys Garage".

It's produced by Little Fuse, and called Isis Power. It's quite interesting, as
it appears to greatly simplify wiring of any car, especially kit cars. Since I
have a wiring nightmare car that I am restoring, I immediately contacted Isis
Power for more information. They got back to me quickly.

The system consists of three boxes, two for power (one mounted in the front of
the car, one in the rear), and a control module, to which the power modules
connect to via a thin cable.

The advantage here is that wire runs are short, and the connections are
relatively simple.

For the XI, the front module would handle most of the car's power requirements,
including starter, ignition, head lights, signals,dash lights and instrument
power. The module has all of the relay switching using its own solid state
electronics. No wiring of relays is required. The wire runs from each component
terminate at an AMP connector, greatly simplifying and reducing connections that
have to be crimped and terminated.

The rear module would handle the tail lights.

Connecting the modules is a single CAN network cable.

The system has self test and diagnostics, so a post wiring check before start is
easily conducted.

I may wire my very complex Renault R5Turbo "T300" rally car with this system, as
it eliminates 30 lbs of wiring and a huge bundle of wires running from the front
to the rear of the chassis, as well as 10 relays and a whole bunch of fuses.

I have used the Painless system for years, and have found that it works well,
but this speeds up and simplifies the installation of the wiring, and really
requires no special knowledge to accomplish a clean, neat harness in perhaps
less than 10 hours of labor.

The system also reduces the amount of wiring necessary, as no wire runs are
required from front to back (think turn signals, brake lights). Only your
battery cable needs to run forward to the starter, and the small CAN network
cable from the rear module to the controller. It also eliminates the wiring of
relays for the fuel pump, headlights, horn. flashers. Since the switching
voltage is very low, the switches will last longer.

The modules are very small and compact, and incorporate the fuses into the
design, eliminating the fuse block.

You can find information on the system at http://www.isispower.com

The site has several different wiring schematics so that you can see how a
system might be configured.


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