I'm trying to find a wiring diagram for my 89' GL so I can install the radio myself instead of paying a 50$ fee just to get it put in. I'm simultaneously trying to learn more about my car as it is my first car and I wanna be able to work on it myself rather than relying on body shops, mechanics, etc. etc.. If anyone could help me out it'd be much appreciated since I'm basically a new born in terms of being in the car scene.