MOTM

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You don't need a special tool, just a very narrow screwdriver. I do 
this all the time by just placing the wire across the connector and 
then pushing down on one side and then the other with a flat edge 
screwdriver that's narrow enough to fit in the hole. Or, if you have 
two narrow screwdrivers, you can try doing both sides at once.
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I use a fairly large pair of needlenose pliers with blunt ends. Open 
it slightly so that the points are on either side of the blade, and 
push.

Moe