door lock actuator

Ebay. There are a couple sellers out there that always have some for 20-30. Tested, so they say. That's where I bought my last. Just remember, when buying on ebay, use sellers with many sales and very low negative feedback.
 
Follow this link to fix your door lock actuator problems http://jrichker.stangnet.com/Mustang_tech/door_actuator_fix/1_of_8_door_actuator.htm

Stuck with door lock actuators that don't work and don't want to pay the $50+ for a new one? Tried the junkyard ones and found that they last six months and freeze up?

A new actuator for less than $4. Fix one side for $17, do both sides for only $23. I don't sell parts, I don’t make any money off of the upgrade, I just tell you how to do it cheaply and easily.
 
You can just mount them like I did. I got the Parts Express ones and just drilled mounting holes in the door inside sheet metal. They have been working for about 2+ years now.

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