killswitch working off seatbelt

i have a customer that wants to do a killswitch off of his seatbelt. the vehicle is a 2005 ford f-250 would anybvody happen to know what wire is the seatbelt sensor and if it is a positive or negative.

lol that's a first, but probably an innovative idea for safety reasons. Car manufacturers should probably look a little more in depth into this post.

They actually are, as we speak. Heard something a couple of weeks ago about this. Some guy built some kind of prototype and was offered a ton of money to sell his invention. I'll see if I can find some info.

Prototype? I could build it in a couple minutes. Just need to wire a relay as follows: 86 - ignition 85 - (-) trigger from seat belt sensor. Cut starter wire in half... 87 - one side of starter wire 30 - other side of starter wire dvaldez, to find the wire go to the seat belt anchor (under the drivers seat). You should find probably 2 wires going to it. One will probably be constant ground, the other will only show ground when the seat belt is inserted.

So could I..but that wasn't my point...I was talking about automobile makers incorporating this into every automobile. I doubt they will just wire in a relay and call it good. My reaction was the same as yours though Jworm....I couldn't believe someone didn't already have a patent on this.

Didn't Volkswagen have something like this a few years back?Installer, IT support, and FFL. I need less hobbies.

The wire color should be BROWN / Light Blue and it goes ground when buckled

its bad enuf having to hear the beep when its not buckled but goodness.  lol

i already put in the viper 5901 with built in killswitch. to add this on top of that do i cut the purple wire going to the starter side in half??