Celica Forums General Discussion Interior GTS Factory Radio Line-In

I am wanting to add a line in on my stock radio (I'm trying to keep a stock look as much as possable). When I did the LED mod to it I noticed a second port in the back of the radio for more hook-ups. does anyone have a clue what I could do? or get the connector that fits this port?


I have a FM Modulator but I don't like the sound quality.