basically i have an 1997 audi a3 1.8 20v sport. it used to have the gamma tape stereo. i took this stereo out and replaced it with my alpine. i managed to connect the front and rear speakers but did not find the connection for the front tweeters that are built into the door handles. does anybody know the colour of these wires pllzzz help as i have too much bass in my car and no treble i need these to work....thankyou!!