I own a 91 honda civic hatchback, but right now it isnt doing much w/o a Cd player. An after market cd player was purchased, when it was plugged in it said something along the lines of "needs to be programmed". Is there a way to fix this, I'm not sure if this is a general error, that can be fixed easily or what. I have the model numbers and such, but I'm not really sure if that would help. I don't exactly have the money to take it to the dealer, so anyhelp would be great.