Audio Install question plz

[beeza]

My friend and I are going to install a stereo in his car:

2 6x9" in the rear
2 4 1/2" in the front + tweeters
12" sub
Headunit
Amp

I have done the same install in my car with a 4 channel amp but with no tweeters.
Do I just wire from the amp to the cross-over box to the front + tweeter speakers?

Thx Guys.

[funkdr]

Yes, the crossover splits the signals to each component ie the tweeters get high frequencies and the mid gets the lower usually crossed over at a certain point with a 6 or 12dB slope.