Shift linkage adjustment

["Robert Rooney" <dmcvegas@xxxx>]

Does anyone here know the size of the nut on the shift linkage cable 
that's used for adjustment? I've tried using pliers, but the handle's 
are always too long to rotate the nut once I do get a grip on it. All 
of my open-end wrenches are American and none fit, so I'm guessing 
that the nut is metric (probably 10mm like almost everything else, 
but I just wanted to check first). Also, does anyone have any 
suggestions on loosening this nut? Any ideas would really be 
appriciated!

-Robert
vin 6585