tweeters
 

what is the best place to connect tweeters ive placed them on my front door cards do i connect them to the front speakers

High frequency sounds are more direction then low frequency bass tones so they ideally should be mounted near head level pointing in your direction. A lot of people position them on their A pillars or wing mirror covers.

Best bet would be to use blue-tak, moving it around until you find the best position for sound.

Oh and tweeters usually connect to the crossover as that divides the high and low frequencies, giving the woofer the low frequencies and the tweeter the high.

Dont connect them directly to your speakers or they'll be damaged, you need to use crossovers.

If they are aftermarket tweeters you will probably find they have crossovers built in anyway, but as said, double check the low frequencies will be cut off in some way or they will blow up.

Where exactly have you mounted them mate?