Basically this is how the wiring goes. Amp to cross over. That goes into your “Amp In” “Amp Out” or whatever it should say. Then just wire up the speakers, spkr plus spkr neg, twt plus twt neg. The hard part is usually finding a spot to set the cross over. You could always set the crossover in the trunk, but then you’d have to run wires alllll the way to the tweeters and speakers.