How to test 3 wire speed sensor?

Click the link below to get the procedure to test 3 wire speed senor:--

http://www.youtube.com/watch?v=alR_toPdr4g

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To Order car parts online:--To get heavy discount on car parts .Click this link below:----

http://technoanswers.blogspot.com/2011/05/from-where-to-order-car-parts-online.html

For car error code diagnosis click the link below:---

http://www.automd.com/diagnose/?amdcid=apwldrbrd1

Car no start:--

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html