Connecting those wires will do nothing but make your CEL flash. On the OBDI cars (pre95) that was part of the self diagnosing computer, not on the later cars though.
On your car, to the left of the steering column, on the lower side of the dash, will be a little door-type thing that flips down, that's where the OBDII port (plug in) is.
Will Subaru fix it for free? Highly doubtful...your car has too many miles to be covered under warranty, and they sometimes make people pay to pull codes on warranty fixes. Many parts stores are pulling and clearing codes for free to get people in to buy parts, check that out first.
It is probably something to do with your amp and power supply situation. Might need an Optima battery and HD alternator to keep the juice flowing. If your voltage gets below 12v, your car WON'T run, so get get it fixed ASAP, or you might be using your AAA...