At 07:30 PM 5/3/2000 , you wrote:
>I want to put a hidden kill switch in my truck but really have no idea how
>to do it. Anyone know how? Thanks
>
>2000 Black Dodge Dakota 4X4 4.7L V8
>ICQ# 47732665
>http://4x4dakota.8k.com/2000dakotaCC.html
On a '99 Dak, if you cut the large Blue and large Black/orange wire you
kill power to the computer, ABS, and air bags, thus killing the
engine. These wires are in the steering column wiring harness. The
computer runs off one wire, and the ABS and air bags are powered by the
other. I know this because when I hooked up my Viper 550 alarm's remote
start feature, leaving one disconnected I would get an ABS and air bag
light when the alarm started the truck. I would use two relays to break
both wires, and connect the relay coils in series. Connect +12 to one side
of a single pole switch, then from the other side to the first relay coil,
then from the other side of the coil to the next relay coil, then from the
other end of that coil to ground. Hook up the two wires to the relays
using the normally closed contacts. I suggest getting 30 or 40 Amp relays,
there is some current flowing through those wires and don't want to add any
resistance to the circuit than what is already there.
As an aside, I would use both wires, as killing the power to the computer
and not the air bags, I would think you run the risk of triggering the air
bags. The air bags are controlled by the computer, but killing the power
to the computer and not the air bag itself could cause a $1500 mistake, or
$3000 if the passenger bag is on.
Now if you just want a starter disable, use the big Blue/Yellow wire. That
goes to the starter relay/solenoid.
Remember, these are color codes from a '99 Dak, not guaranteeing they are
the same on your 2000 model. Simple way to check, get a meter, ground one
lead, pierce the insulation with the meter probe, should read 0V with key
off. Turn key on, should read 12V, start the vehicle, voltage should stay
12V during start process., if it zeroes while starting the engine, you have
the accessory wire. You should find two wires that stay hot during key on
and start process, in the steering column wiring harness.
Mike Schwall
__________________________
mschwall@flash.net
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