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A "Loud" Twist On The Kill Switch Mod

6K views 10 replies 8 participants last post by  mrcarcrazy 
#1 ·
All of this talk about theft and TJ security started me thinking. Most of us have a kill switch hidden somewhere, alarms and whatnot. And then there is this

Updated – TJ Theft Protection ADE/ADE-II w/Light Chaos - JeepsUnlimited.com Forums

This is a great idea but I was not comfortable with another relay in the Heep and always being on when the Heep was on. Not sure why, but somehow this led me to my motorcycles, past and present. I have always wired in a kill switch on them too, only it was also hooked up to the horn. And it is easily done on the Heep too. Most of us used a SPST (single-pole, single-throw) switch. Well, if we change that out to a SPDT (single-pole, double-throw) and get ourselves an extra horn, it can be done.

How to do this?
Most of the circuits we interrupt with the kill switch has +12v going to it only when the Heep in on. With a voltmeter, find out which wire going to your switch is the +12v in (upstream side). Connect that wire to the common or center contact on your switch. Connect the downstream side, which would normally go back to whatever circuit you interrupted, to one of the other terminals of the switch. Then connect the last terminal to your extra horn that you had laying around (or a cheap junkyard find). Now, when mister thief jimmys your ignition, if your switch is off, the horn will sound off instead. I mounted my horn inside the cabin of the Heep. I may come back to a dead battery, but at least, I will come back to my Heep. You only need to make that the fused circuit that you connect your kill switch to will handle the current of your horn. Normally, a 10a or larger circuit should do it. If you think, or do not know, if the point in the circuit where you cut in your kill switch is downstream of the fuse of not, add one into the wire going to the horn. And, of course, make sure that your horn is grounded.

You could even do this with the disable relay mod shown in the link. Just route a new wire from your relay contact #1 to your horn, and done!

Woe be to the poor fellow that forgets to flip the switch before starting my Jeep, it is loud in there now! (Yeah, I know, I will probably be "that guy")
 

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#2 ·
This might be a dumb question but is Jeep theft a big problem? If it is then I need to get a kill switch because I have invested too much in my Wrangler for it to get stolen and I lose everything. If so, what kind do you recommend?
 
#3 ·
abw, theft is a HUGE issue for Jeep Wranglers. While hardtops generally are pretty safe, the soft tops just get sliced and then a quick grab.

I'll mention that I work at RadioShack so if you guys need some parts let me know (as long as your somewhat established here at WF please 100+ posts).
 
#4 ·
I do have a hard top on mine with all the windows tinted. Should that be enough or should I still get the kill switch?
 
#6 ·
I do not even live in a "high crime" area, I just feel that you can never be "too sure." Yeah, if it was mine, I would do it.
 
#5 ·
I have a 2000 TJ and under my dash like right below the steering column I found a little black box with a fuse like thing plugged into it and it sais "Fail Safe" on it and when i pull it out the jeep wont start and has no power at all. The little fuse thing also seems to have a key-ring hole on it...
 
#7 ·
Sounds like a kill switch to me...might just need jumpered to get it to start, but if someone's just trying for a snatch and grab, it could prevent it from being stolen.
 
#8 ·
Jeeps nationwide are NOT a HUGE problem, cadillac escalades, 2000 mustangs, 95 honda civics, 95 toyota supras, 01 acuras are. However in socal there has been a recent surge of vehicle thefts, like huge.

Ive looked up numbers and wranglers are moderate to low, minus california. Yes I would install a kill switch and do the club. When I lived in socal, my car was broken into and ignition all messed up in an attempt to steal it, fortunately my kill switch stopped the bastard as I didnt even have comprehensive on my jeep at that time.
 
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