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Installing an ignition kill switch.

Old May 1, 2018
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Installing an ignition kill switch.

Hello,

Long story short, I'm going to install an ignition kill switch on my 2003 Civic Coupe.

Page 14 of the following electrical guide shows that at the ignition harness, there is a 12 volt constant wire, a 12 volt ignition wire, and a starter wire. Can I use any of those, or what one in particular? Thanks

http://www.cjohnsontech.com/HONDA%20...01988-2006.pdf
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Old May 2, 2018
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Re: Installing an ignition kill switch.

You’d install the switch on the wire that provides power with the key in the “Run” position. I’m not sure which one that is, but if you would like, I could do a volt measurement on my Civic and let you know which color wire it is. But I’m not sure why you would want an ignition kill switch. Can’t you shut the engine off by turning the key off? Or is this for EOC or something?
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Old May 2, 2018
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Re: Installing an ignition kill switch.

Thank you for the reply.

It's suffering from the known tumbler issue. The tumblers for the doors and trunk are shot. I've already had to replace the ignition assembly at about 150,000 Km, and now at 250 Km, the ignition tumblers are gone again. The key will barely go in or out of the ignition, but when I finally can get it in, it turns back and forth with no problem. So, I'm just going to leave the key in the ignition, hence the need for the kill switch.

I think I'll try the white wire first, as according to page 14 of the link I posted, that's the 12v constant to the ignition. Would you agree?
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Old May 2, 2018
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Re: Installing an ignition kill switch.

Originally Posted by cyber1
Thank you for the reply.

It's suffering from the known tumbler issue. The tumblers for the doors and trunk are shot. I've already had to replace the ignition assembly at about 150,000 Km, and now at 250 Km, the ignition tumblers are gone again. The key will barely go in or out of the ignition, but when I finally can get it in, it turns back and forth with no problem. So, I'm just going to leave the key in the ignition, hence the need for the kill switch.

I think I'll try the white wire first, as according to page 14 of the link I posted, that's the 12v constant to the ignition. Would you agree?
I see. So it’s for theft prevention so you can leave the key in it. That makes sense. What kind of switch do you plan on installing? The ignition switch is pretty high current, so you’d need a heavy duty switch. But yes, installing a switch on the main power wire for the ignition switch would work. But you may want to just install a switch under the back seat on the fuel pump power wire instead. It’s a lot easier, it’d be hidden, and it’s much lower amperage.
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Old May 2, 2018
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Re: Installing an ignition kill switch.

Yes, theft prevention.

I planned on installing the switch under the dash near the steering column.
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Old May 2, 2018
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Re: Installing an ignition kill switch.

Although, it seems like your idea will probably be a better way. I'll look into that.
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Old May 2, 2018
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Re: Installing an ignition kill switch.

Originally Posted by cyber1
Although, it seems like your idea will probably be a better way. I'll look into that.
Ok. If you have questions or need help, just let me know.
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Old May 2, 2018
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Re: Installing an ignition kill switch.

Ok. Thank you.

I probably won't get around to it until Saturday or Sunday.
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Old May 3, 2018
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Re: Installing an ignition kill switch.

Well D17, I went with your idea and am glad I did.

Took about 15 minutes and it's all good now.

Thank you again
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Old May 3, 2018
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Re: Installing an ignition kill switch.

Originally Posted by cyber1
Well D17, I went with your idea and am glad I did.

Took about 15 minutes and it's all good now.

Thank you again
Anytime buddy. If you ever need anything else, feel free to ask.
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Old May 3, 2018
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Re: Installing an ignition kill switch.

why don't you just remove the tumblers from the lock so it looks normal and keeps honest people honest? i think i read a post here about someone doing that a day or two ago
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Old May 3, 2018
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Re: Installing an ignition kill switch.

Originally Posted by RobertD
why don't you just remove the tumblers from the lock so it looks normal and keeps honest people honest? i think i read a post here about someone doing that a day or two ago
I did that. The car can be started with a screwdriver as long as the key is by the immobilizer!
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Old May 3, 2018
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Re: Installing an ignition kill switch.

Originally Posted by RobertD
why don't you just remove the tumblers from the lock so it looks normal and keeps honest people honest? i think i read a post here about someone doing that a day or two ago
I read about that and didn't do it for 3 reasons:

1) It looks like a real PITA to do, along with a few things that can easily mess up.

2) The crappy tumblers have pissed me off so much that I didn't want to touch one ever again

2) The fuel pump kill switch was way easier to do.
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Old May 3, 2018
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Re: Installing an ignition kill switch.

Originally Posted by cyber1
I read about that and didn't do it for 3 reasons:

1) It looks like a real PITA to do, along with a few things that can easily mess up.

2) The crappy tumblers have pissed me off so much that I didn't want to touch one ever again

2) The fuel pump kill switch was way easier to do.
1. It is a real PITA, and things can get screwed up.

2. Reasonable LOL

3. Very true!
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