I have an old head unit from my old car that i was hoping i could install into my 88 TC, but ive run into some complications on the install. i have everything all wired up correctly according to the wiring diagram i found online, but nothing happens when i turn the car on. the head unit doesnt power up at all. i'm very confused and if anyone knows what could be wrong i could gladly use some help. the head unit is a jvc kw-av50 and my TC has the premium sound if that makes the install any different.
