I own a 97 Ford Ranger XLT, 4.0, AT with 103,000 miles. It has power windows and door locks. I have just a regular key, no key fob?

Today for the very first time, the anti-theft alarm starting going off for no reason while it was parked in my driveway. I unlocked the drivers door with the key and the horn stopped and lights stopped flashing.Nobody was trying to break into the truck.

What caused this and how can I prevent it from happening again? I would hate for the alarm to go off in the middle of the night.

Is there a fuse I can remove to solve this problem? I don't keep any valuables in the truck to steal and don't think anyone would want to steal a 22 year old truck.

What MAY have happened is that someone's key fob activated your alarm. Hard to say. One thing you can do for small bucks is get a key fob so IF it happens again you can reset it without having to get out of bed in the middle of the night. Ace Hardware and others sell and program the key fobs for the older cars and trucks with electric door locks.