okay, so i want to install an ignition cutoff switch, a fuel pump cutoff switch, and a starter button. I've seen this one asked before, but i didn't really see the information i needed there, so i'm starting a new one.

I think i can just go and wire the fuel cutoff switch in series with the inertia fuel cutoff switch, so either one of them would cut off the fuel (sounds like a safe idea)

However, i'm a bit puzzled with what to do with the ignition and starter leads. First off, can i just cut the wires at the ignition barrel and put a switch in parallel (or in series) with those? Putting the ignition switch in series with the existing one makes sense, as the key needs to be near the ignition barrel, so the ecu can read the code off the key (if i have that right), and it will keep the thiefs away.

Rallycinq wrote this (in 2004.):

A push button should be ok on its own. Fitting a cut out and ignition switch is a bit more tricky as the ignition will feed from the parking light circuit even when he ignition is switched off.

Click to expand...

What does that mean exactly, and does it apply to seis?

Thanks in advance! :worship:

the cut off switch go on the main positive lead from the battery, and wire it up correctly with the resistor that should come with the switch. I dont know how the ECU will react to being turned off daily, as it will reset its self evertime (not a problem for me as im using a different ecu)

Starter buttons....now then, i got mine off ebay, dont wire it in to how they recomend, as it bypasses they key, so the engine can turn over without the ignition on. I just had a play touching it to differnt wires untill i found out what wire worked only with the ignition on. never had any problem except once or twice the button stuck in and the starter motor carried on going

an easy way to wire the starter button is as follows

locate the spade terminal on the back of the starter solenoid - the original wire will be connected to it, small wire.

using a piggy back spade terminal, connect the original wire to the piggyback, and run a wire from the terminal to one of the terminals on the button.

locate a wire that is live with the ignition on, cut into and extend this wire to the other button terminal.


you will now be able to use the key, or the button, in either case the ignition will be on ready to start the engine - the button will only work if the ignition is on via way of turning the key.

On a cento there is the position that you can wind the key back one position, after pushing the button in, to operate the side lights with the ignition off. If you leave this circuit operable, the supply will feed back through the ignition and keep the engine running even with the cut out switched off.

I fitted an extra small switch to disable this feature when needed.

Cheers

PD

are you saying that i'll be able to start the car if the key is in that position even if the ignition switch is off, or that i'll be able to start the car regardless of my cutoff switch if that circuit is left operable?

Your car won't switch off.

Cheers

PD

nmrmak said:

fuel cutoff switch in series with the inertia fuel cutoff switch

Click to expand...

I'll have to check my schematics, but i don't think this will work. I THINK the inertia switch shorts a +Ve to ground, to cut fuel.

You would have to wire the switch in parallel to the cut off, and have it normally open.

At least I think. I'll confirm tomo.

Kristian

okay, i installed the ignition switch and starter button, but i didn't want to fiddle with the fuel pump. This is because, afaik, the fuel pump is disconnected when you turn of the ignition, so there's no point in cutting it separately. I'll post pics soon.

Didn't have any problems with the parking lights thing, i probably wired it differently (i only cut the ignition, not all power.)

Kritip: If i wanted to cut fuel, i would still connect it in series with the fuel pump and use it to cut the +Ve between the battery and the pump. Without +Ve the pump can't work. I doubt they would connect the inertia switch in a way to short +Ve to gnd, that would generate a lot of heat / blow fuses / empty the battery, why would they do that? Correct me if i'm wrong here.

Thanks for the help everyone

It was late and I said i wasn't 100%

You COULD short the line witha simple current limiting resistor, but thats not how its done.



Inertia switch I50 cuts the ground from the pump, and makes the warning light (display) on the dash illuminate instead.



Kristian

or run the fuel lines inside the car and have a tap on it

and put a giant valve on it... would look rather cool?

If its only the ignition you are cutting, not the full FIA cutout you shouldn't have a problem.

Cheers

PD