2004 Subaru WRX • 4 cylinder AWD Automatic • 60,000 miles

Bought a used 2004 Subaru wrx, my husband disconnected the battery to replace a bulb in the headlight. When reconnected the alarm kept going off. Did not get transmitter when bought car. Tried the emergency override in the owners manual but then wouldn't start. Got it started eventually but when I shut it off couldn't start it again and alarm kept going off. Tried for half hour, finally a good Samaritan disconnected battery, I used emergency override again and got it started but didn't dare to stop before I got home. Went to start this am and alarm started all over again. Obviously, when I bought it they did something so that this wasn't an issue, but it is presidents weekend and no service places are open. Have to work tomorrow and am panicked. Can you help?
February 20, 2011.

Check out the related content below while we wait for the question to be answered by a professional mechanic.