Andrew/Tom,
What a great idea - the list at work again.
I've had a read up on these and they are very neat and safe and much more
effective than using the common and mandatory Oil pressure switch as a
safety cut. This is a keep post for the technical files as the RTA here
requires a mandatory fuel cut with Ignition Off on an EFI conversion but
this is much safer as it's triggered by engine Stop. Modern day EFI engines
have a similar sort of thing built into the EMS but I don't know how it
works exactly. I know when you turn the ignition key ON in the Toy the fuel
pump primes and then stops after a few seconds and if you don't start the
engine the pump will top up the pressure every now and again.
regards
Terry
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Tom Richardson
Sent: Tuesday, 24 July 2001 8:50 PM
To: [EMAIL PROTECTED]
Subject: RE: Relayed power for computers, fuel pumps etc
Andrew,
You can attach it to the ignition switch if you like but a safer method is
to use a LPG safety switch cut-out. You attach it to the negative side of
the coil, and use it to trigger your fuel pump relay. They cost about $30
and will switch for a few seconds when you turn the key (ie put some current
through the coil) even though there's no pulsing, which serves as a pump
primer. No ignition pulses = no fuel pump (which is probably the safest way
to do it) Most come with a quick wiring diagram on the package, to help
when you're talking to the LPG specialist, ask them for the switch which
controls the solenoid on the tank - you need the same product but use it to
switch a relay instead of a solenoid.
Cheers
- Tom
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Andrew Robert
GREENBURY
Sent: Tuesday, 24 July 2001 7:35 PM
To: [EMAIL PROTECTED]
Subject: Relayed power for computers, fuel pumps etc
Hi everyone
I want to set up a relay switched supply for fuel pumps and stuff when
the ignition is on. I recall tom or zac was doing this a while ago - what
trigger supply/wire did you use to switch the relay when the ignition is
on?? terry suggested using the ballast resistor wires - the wiring diag
shows a black/white and a black/blue wire so which one should be used?
Thanks for any help on this wiring stuff
Andrew
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