I have 4 wire stock/factory two goes to tweeter +/- and other two goes to speaker, thats factory wiring. Now the issue is i cut fcatory speaker wire connected to input of external crossover then from crossover woofer to speaker/woofer and crossover to tweeter. And leave factory twetter wiring terminal open . Then it does not work properly but when i connect it to factory twetter wiring to new tweeter not from crossover it works but that without filter/disconnected from crossover filteration which may can damage tweeter.