help installing stock head unit

[Ricerboi]

i use to have an after market deck but am taking it out. how do i reinstarll my stock one. (gts 03) i tried plugging it back in but it doesnt work, is there anythying else i have to do to complete the reinstall?

[02celica]

did you use wiring harness?

[Ricerboi]

yes

[ragingpaseo]

what kind of harness for your 03' gts??? a photo would help too...and i guess you didn't do the intall yourself before...who did it then???

[Ricerboi]

i took it to a shop, my stock harness is still there...
i asked the shop and they said they bypassed the stock amp, i would have to re-wrie it? how would i do taht?

[SingleCamCivic]

I assume if you check down near the passanger side kick pannel to the right of the glove box ull see your stock amp, and a bunch of cut and tapped wires. If youre lucky, all you need to do is plug the amp back in.

[Ricerboi]

i plugged the amp back in but it still won't work