HMMMMMM
I have a 95 and I put in a sony system.
Make sure you have 2 adapters plugged in. One should be a long thin one and the other should be a square one.
Everything should work from that. There shouldn't be any other connections (ground, power, etc..) everything should go through the 2 sockets...
I can't imagine why the speakers wouldn't work.
When you plug the old unit back in, do they work??
