"Richard M. Martin" wrote:

I am wiring a homebuilt now and I am having challenge in coming up with

a

safe way of wiring the engine.  The engine requires four very
uninterruptible 12V wires.  They are as follows: 1.  EC2 computer, 2.
Igniters, 3.  Injectors,  4.  2 Fuel pumps.

I am planning on running both fuel pumps at all times, so I am using two

CBs

and two switches to control them.  The power is coming off a battery

bus.

The EC2 computer, igniters and injectors will be run off the battery

buss

with no fuses and one dedicated key type switch (spdt).  The idea is

that if

the master switch is turned off, the engine will continue to  run.

Is this the best safe way to wire the engine?  Any ideas?

 Martin,
    My belief is that you are on the right track, the fewer things between
your battery and critical component, the better.  I was finally left with
only a switch between power and my critical component and even though I
purchased a high quality switch it still  worried me.  So I wired around all
critical switches and stuck in a 20 amp circuit break that I leave "OPEN".
Should any switch fail (and I have pushed it in once - turns out power
wasn't the problem), I can push this CK closed and by-pass any failed
switch.  It sits close to my Master power switch away from all other CK
Breakers. When "IN" I can turn off the master switch and all other switches
and the engine continue to runs.  Just a thought.

Ed Anderson
Matthews, NC

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