hidden engine disable switch - JeepForum.com

 
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post #1 of 14 Old 02-03-2011, 09:23 PM Thread Starter
Fin_Reaper
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hidden engine disable switch

On my 96 Dodge Ram 1500 5.2 manual (obd-II), what circuit do you guys recommend installing a hidden engine disable switch? ASD seems like it's too obvious, but then again maybe not.


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post #2 of 14 Old 02-03-2011, 09:39 PM
burnout189
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well, thats really not yj tech.................

but, i guess if i insisted on doing so, i would probably go for an ignition circuit. cut the spark. a little less obvious than asd or fuel pump. could put it right in line with the coil i guess. thats up there on the right front of the motor, easy to get to, yet not real noticable.

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post #3 of 14 Old 02-03-2011, 10:26 PM Thread Starter
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Quote:
Originally Posted by burnout189 View Post
well, thats really not yj tech.................

but, i guess if i insisted on doing so, i would probably go for an ignition circuit. cut the spark. a little less obvious than asd or fuel pump. could put it right in line with the coil i guess. thats up there on the right front of the motor, easy to get to, yet not real noticable.
Thanks - the 5.2 will be going into my YJ, if that helps, but hardly any of the original YJ harness will be used.

A coil wire seems rather simple - the harness is wide open right now, so it would be easy splice into.

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post #4 of 14 Old 02-03-2011, 10:31 PM
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On my old XJ I put in a fuel pump kill switch on the main harness. It lets the jeep fire up for a second then die, and doesn't flood your engine with fuel like removing spark would. It worked perfectly.

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post #5 of 14 Old 02-03-2011, 10:45 PM
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You can also get a lockable battery lock out goes right in line on your battery cable requires a barrel key like on a soda machine to switch it.

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post #6 of 14 Old 02-04-2011, 07:13 AM
Que89YJ
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Easiest is to take a critical sensor to ground.The easiest is the crank sensor. On the signal line of the sensor you chose, somewhere in the harness tap in a wire. Run it to a switch and the other side to ground. Your not switching power so there is no fuse to blow. If you are really into hiding your job grab a normally open magnetic switch. You can use a common refrigerator magnetic to keep it active when you are driving it. Remove the magnetic from what ever spot youve hidded the switch and nobody will ever be able to figure it out.
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post #7 of 14 Old 02-04-2011, 07:31 AM
timatoe
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When I bought the YJ it had one that simply disconnected the 12v going to the starter relay, worked fine. I think the easiest would be to cut power to the fuel pump that way even if it starts initially it'll die and not start again.

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post #8 of 14 Old 02-04-2011, 08:20 AM
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My wife had a Lumina with a 'secret switch'. You had to activate the right turn signal or it wouldn't start.

Mine is more complicated:

Press the gas pedal to the floor, and pull the choke half way out. Release the gas pedal, and press it two more times.

Unless this procedure is followed exactly, the Jeep won't start.
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post #9 of 14 Old 02-04-2011, 08:34 AM
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Quote:
Originally Posted by swatgig17 View Post
My wife had a Lumina with a 'secret switch'. You had to activate the right turn signal or it wouldn't start.

Mine is more complicated:

Press the gas pedal to the floor, and pull the choke half way out. Release the gas pedal, and press it two more times.

Unless this procedure is followed exactly, the Jeep won't start.
How did you do that?

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post #10 of 14 Old 02-04-2011, 10:46 AM
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Quote:
Originally Posted by Colockum View Post
How did you do that?
It's a carbed 4.2

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post #11 of 14 Old 02-04-2011, 05:22 PM Thread Starter
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Quote:
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It's a carbed 4.2

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post #12 of 14 Old 02-04-2011, 08:57 PM
dodger889
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Why not just switch the the ECM power somewhere no one would look. Then nothing will work starter or fuel pump. Then if they try to bypass the ignition switch it still will not work punch the key same thing. Hide the switch in plain sight to look like it should be there or a serial of them to use a combo of which one needs to on or off.

A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
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post #13 of 14 Old 02-05-2011, 09:25 AM
dennis294
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Quote:
Originally Posted by timatoe View Post
It's a carbed 4.2
3 pumps for mine. And you can't touch the brakes, so if you're on a hill you better be quick about it.
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post #14 of 14 Old 02-05-2011, 10:10 AM
drbandkgb
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My kill switch runs to the starter..

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