Engine Kill switch?

SeaWulf · 02-25-2009, 02:42 PM

Alright, I'm sick of adjusting the ignition switch, I can't get it right. Since the engine won't shut off I want to wire up a couple of switches, one to kill the engine, and one to completely shut off all power.

For the first, I would cut off the fuel pump, but the engine would still run until all the fuel in the carb was used up.... How else can I shut the engine off?

For the second, can I spice the switch into the power that goes to the ignition switch? This would shut off all electrical systems, correct?

**jatepper** · 02-25-2009, 03:25 PM

Do you have a factory tach? If so, then this is easy. Go under the dash and disconnect the red/white wire and this kills the jeep. I put a kill switch locked inside my tuffy console for this.

I dont think it will kill power to the fuel pump, but I think it just kills ignition power since they are routed in series.

davemci · 02-25-2009, 03:36 PM

Open the coil by installing a toggle switch.

SeaWulf · 02-26-2009, 09:49 AM

I don't have a tach, so that won't work.

What else can I do?

thanks btw

**gojeepin** · 02-26-2009, 05:52 PM

OK... it seems like I came into the room just in time for the punch line.

I assume your ignition switch used to work...

What caused it to stop working? Did adjusting the ignition switch ever work? Did you change your ignition box?

SeaWulf · 02-26-2009, 10:04 PM

Quote:

Originally Posted by gojeepin

OK... it seems like I came into the room just in time for the punch line.

I assume your ignition switch used to work...

What caused it to stop working? Did adjusting the ignition switch ever work? Did you change your ignition box?

Even in the "off" position, the ignition switch is still on acc. Adjusting the switch is hard as hell and I'm sick of screwing with it.

Copy/Paste from what I posted on my local 4x4 board

Quote:

So my ignition switch is screwed up, and there are only two positions, on, and accessory. I need to wire up switch(s) to kill the engine, and disconnect the battery (to prevent drain from being on acc.)

I'm fairly certian if I put the switch on the power to the ignition switch this would both shut off the engine and prevent battery drain. My thinking is that when the switch is powered the ignition circuit and radio draw power from the battery, but if they get no power they would shut off. This would allow for killing the engine AND prevent battery drain.

Sound right?

The wire in red, for reference

SeaWulf · 02-27-2009, 09:29 AM

I hate to bump, but I need help

Oily · 02-27-2009, 10:52 AM

Quote:

Originally Posted by SeaWulf

Adjusting the switch is hard as hell and I'm sick of screwing with it.

Actually, it is simple. It also sounds like something that you should do so your Jeeps works as it should. A cut off for theft deterrent is one thing but adding more wires to do the same thing as the wires that are there is just asking for more things which can go wrong.
What problems are you having adjusting your ignition switch?

neonistic · 02-27-2009, 12:17 PM

I know that you don't want to deal with the original switch, but replacing it may be all that you need to do. I had a similar problem on a '76 Wagoneer. The new switch was ten times easier to adjust. For a cutoff switch, I would use a wire to the distributer from the ignition module. For power, you can run the power wires through relays and run the signal wire in series.

**John Strenk** · 02-27-2009, 12:23 PM

Quote:

Originally Posted by SeaWulf

I don't have a tach, so that won't work.
What else can I do?
thanks btw

That's even better as the plug is still there is the tach is not. Seperate the tach plug and the engine won't run but it wont stop your battery drain problem. only a new switch will.

SeaWulf · 02-27-2009, 06:23 PM

Quote:

Originally Posted by John Strenk

That's even better as the plug is still there is the tach is not. Seperate the tach plug and the engine won't run but it wont stop your battery drain problem. only a new switch will.

Just tested this and it works! thanks!

I'm gonna wire up a switch on the tach to kill the engine, and then get a battery disconnect and put it on the hood.

davemci · 02-27-2009, 09:07 PM

I don't know if you have the stock ignition but this seems to be a problem Jeephammer mentioned in the distributor mod here. He mentions that the engine runs on even with the ignition switch turned off. Toward the bottom of the link there is a picture of the ignition cable with a diode installed. This cured the engine run on problem. If all else fails I'd just install an in-dash ignition switch instead of a bunch of toggles.

edit: It's actually the exciter wire.