I stumbled across this site looking for a solution to the cold idle problems on my custom buggy.
( http://www.cardomain.com/ride/3923620/1971-volkswagen-beetle/# )
This thred led me to the 90's era Jetta IAC Valve ( http://responsive.carparts.com/details/Volkswagen/Jetta/Replacement/Idle_Control_Valve/1995/REPV313201.html?TID=80000000CP&origin=pla&CP=1&CP_SRC=PPC&003=27372932&010=cpreidcova95volkswagenjetta19931999replacementrepv3132011&gclid=CKvsptDg7LgCFUqk4AodEjIAUQ ).
This looks great for my application, but does anyone know if the polarity matters on the 2 wire connection and if it does, which wire would be positive and which ground?
Thanks,
Adam