Lock wire or safety wire is applied in situations where extreme mechanical reliability is needed. Aircraft use a lot of lockwire to secure fastners. So do aerospace companies and a lot of car and bike racers. Here's how it works.
Imagine a bolt and nut. Now imagine the bolt having a hole drilled through it near the end of the threads away from the head. Put the bolt in the bolt hole using washers if needed and fit the nut. Tighten it up. Now do the rest of the bolts and nuts that hold this cover in place. You now have all these bolts with a little bit of their threads sticking through the nuts, and the hole we talked about is visible. Take a long piece of flexible wire - lock wire - and put it through one hole. Then twist it to the point where it reaches another bolt and put the wire through the the hole in that bolt. Repeat until all the fasteners are lock wired. Even if a nut or multiple nuts come loose, they can't get off the bolts because of the lockwire. Sometimes bolt heads are drilled for lock wire and it's put through the heads of the fasteners, twisted and then secured.
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A lock-picker's tools, which includes a piece of wire.
Some locks can be picked open when you don't have the key. You can use a wire hanger or a hair pin to pick a lock. If you cannot get the lock open, contact a locksmith for help.
Locksmiths have a tool that is basically a hooked piece of thin wire. I had a broken key in the lock that i had to remove so i used a very thin piece of wire and made a small 90 degree bend in it. The idea is to slide the wire (hooked end) along the key and get to the end of the key and get the bent end of the wire hooking the tip of the key. Then simply pull the broken end of the key out. In effect you are using a small,long fishhook to get the key out. Use a pair of pliars to bend the wire. Remember that the wire has to be thin and fairly strong. Coat hanger and bailing wire is much too thick. While breaking the lock, if the lock was damaged then you may have to replace the lock. The key may be jammed in too tightly.
I wanted to do the same with my 2005 f-150, but couldn't find any real answers from anybody at a garage or dealership. I got lucky with my f-150, only because the signal wire from the ECM to the driver's door lock was a separate wire from the rest of the bunch. So I took apart my drivers door, jammed a test light in each and every wire terminal on the harness at the window controls, and drove around. Unlock the doors at a stop, then put the trans in gear and start rolling. They should lock around 5 or 10 mph. When they lock, your test light will light up when you are on the right terminal, showing you the signal wire. When I did that, I just cut the wire. Problem solved. But your vehicle might be different. Try it out and see. Your signal wire might be the same as another wire, so cutting it might effect some other window function all together. GOOD LUCK.
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Release the lock tab and pull it out. It may be melted and stuck in there.
Pop the lock and hot wire the car so alarm dont go off
disconnect the battery.put the key in the switch,and turn to the acc position.(on) insert a piece of wire into the hole of the lock cyclinder.push the wire inward to depress the the lock pin,then turn the key counter clock wise and with draw the lock cyclinder.press the rear of the switch and rotate it counter clockwise. remove the bezel,switch and spacer.hope this helps.
The best way to test a door lock is to locate the wiring for the door lock usually in door boot or kick panel. Use a test light with a probe and poke each wire until the door lock is activated. How ever be sure to they are not vacumm locks
Check for a broken wire in the harness going to the drivers door.
The switch might be bad or the wire isn't getting the right connection with the battery. Or the wire is just shot in general.