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On 10/11/2013 12:09 PM, Alan Carter wrote:
> I am wiring my new FFM directly to the battery with fuse and
> switch, so in the event that If ever i kill the lot, I will still
> have engine running and fuel indications.
What's wrong with wiring the fuel pump to the alternator?
If you wire it to the battery, you are defying the purpose of the
master switch. In a crash landing, I wouldn't care whether the spark
that ignites my leaking fuel was coming from my GPS or from my fuel
indicators or fuel pump. (Not to mention the fact that the fuel pump
may continue to run after the crash, something you might not desire if
there is a fuel leak upstreams).
If you wire to the alternator, nothing can go wrong, assuming that the
engine will stop at impact and the electricity is long gone before you
come to a stop.
I must say that I'm a bit surprised how many people easily modify the
fuel system and/or electrical system, without understanding what the
reasons were why it was designed in that specific way.
Don't fix something that isn't broken!
Frans
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