new deck, speaker problems? also code 12

[toyota83]

hey, just got the girlfriend an 86.5 na 5 speed supra with no rust for $350 for x mas. steal of a deal its in real nice shape. this kid i got it from said it needed a new cd player, so i installed an alpine. the deck lit up but there was no noise from the speakers like the previous deck. is there an external amp somewhere?? my dads porsche 928 has one under the passenger seat. is this similar?

also, the yellow and blue power wire has no power, i ran a temporary jumper from cig lighter plug.

and yes... the wires are all where they are supposed to go...

pics are comin soon.

i jumperd the diag. port and believe i have code 12. the car sometimes accelerates a little rough. not too bad. only under light accel. idles fine, heavy accel fine. just plugs and wires? i hear you have to remove the intake manifold to get those 2 plugs out, which would lead me to believe they have been in there for quite some time.

fog lights... is there a trick to turn them on? switch doesnt do anything. have not checked bulbs or fuses.

final question... upper control arm/balljoint. NAPA doesnt have them, partscity says they can "special order" them and they are over $200. any good sources? online or minneapolis area. not really looking for aftermarket performance ones. its not a f'ing race car...