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Firstly, I know bugger all about motors and there wiring.
I have an EFI 250 Cross-flow 6 cyclinder Ford Falcon motor in an MQ patrol. I have a battary isolation switch not far from the battary (Passanger side)
I need to Wire the Isolation switch up as a Kill switch. i was fidelling with it on the weekend and found a wire coming out of a little canister that to another canister that thenn leads to the spark plugs. I started the motor then pull this wire out and the motor died strate away.
How do I wire this to the Kill switch so it works of the Igniton barrale? I don't want it to have constant power when the kill switch is on.
It's not a bad way to shut down the engine either.
There are two terminals, one -ve one +ve.
+ve gets power from the battery via the key barrel, it is powered up when the key is at IGN or START.
-ve gets a trigger signal from the distributor. Basically the dizzy connects/disconnetcs this wire from ground every time there's a spark required. That is then the signal that effectively tells the coil to send a spark down the coil lead to the spark plugs.
So basically you would cut the wire that goes to the +ve terminal to kill the motor.
Having said all that, I am not 100% sure what you want to do with your kill switch. If the kill switch actually disconnects all battery power then you don't need to do anything else. Or is the kill switch ONLY to shut the engine down?
Its currently running as a battery isolation switch, so when its off there is no power any where. but for a comp i need it have the ability to be on running every thing the if it gets flicked off every thing dies (roll over, fire's, etc)
Abit clearer?
Do i need a realy or any thing like that?
If i wired it straight to the switch it will have power when ever the switch is on not when the key is, correct?
If you have a switch that is fully isolating the battery, then I would have thought the engine would stop and basically everything would shut down when you pull that switch.
So you wouldn't need a second switch to kill the motor.
What does the kill switch on the guard do at the moment?
If you have a switch that is fully isolating the battery, then I would have thought the engine would stop and basically everything would shut down when you pull that switch.
So you wouldn't need a second switch to kill the motor.
What does the kill switch on the guard do at the moment?
Will still run on the alternator.
[quote="Harb"]Well I'm guessing that they didn't think everyone would carry on like a big bunch of sooky girls over it like they have........[/quote]
If you have a switch that is fully isolating the battery, then I would have thought the engine would stop and basically everything would shut down when you pull that switch.
So you wouldn't need a second switch to kill the motor.
What does the kill switch on the guard do at the moment?
Will still run on the alternator.
Hah, you're right. Duh. Of course it depends where you run the alternator to relative to where you put the isolator I guess.
How about running kill switch off engine m'gt(???) fusible link. Would be lower current wiring than coil wire and would disable engine. Not sure if it would cause probs though. Hopefully somebody else could confirm or flame this suggestion
Last edited by GQ Bear on Sun Aug 12, 2007 1:36 pm, edited 1 time in total.
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The only problem with a fuel pump cutoff is the pressure in the line will let the engine run for a little while , mine goes for 15-20 sec with fuel pump off , Cheers Paul.
MART wrote:The only problem with a fuel pump cutoff is the pressure in the line will let the engine run for a little while , mine goes for 15-20 sec with fuel pump off , Cheers Paul.
MART wrote:The only problem with a fuel pump cutoff is the pressure in the line will let the engine run for a little while , mine goes for 15-20 sec with fuel pump off , Cheers Paul.
Tried this but again i couldn't get it to work once it was wired but if i pull the wires by hand it worked. i think the alternator keeps it goin of some crap. and yer it took ages to die!
RACI 1013 Combination Battery and Alternator Kill Switch
RACI 1013 Combination Battery and Alternator Kill Switch is designed to completely shut down the battery and charging system in an emergency situation.
[quote="Harb"]Well I'm guessing that they didn't think everyone would carry on like a big bunch of sooky girls over it like they have........[/quote]
An Auto Elec came out and did it yesterday, COST ME my left leg. Glad i did thought cause even he had a fair few problems with it! lol had to re-wire the battary isolation switch that i did months ago. i hate electrical shit!
Ended up wiring the fuel pump and coil pack and isolating the battary and all that whohar to the Mines Spec switch from Hella that I bought from TJM CoopersPlains.
i hate electrical shit!