I hooked up my aftermarket radio, but can't find the wires for the door tweeters, anyone know what color they are by the radio?

 

Tweeters are often wired in parallel with the midwoofer with an inline cap on the positive wire on older cars.

 

Vestax is right, but they may have been disconnected inside the door. If not, and they are still connected, they may have been blown. If thats not the case, try this link... and trace the factory wiring. Great information. http://www.lextreme.com/misc.html