Many 1.5A Autocraft chargers include a user-replaceable fuse in the cigarette plug or inline holder. From the manual:
clamp to the vehicle chassis (if the battery is in a car) or the negative terminal (if the battery is out of the vehicle). Automatic Charging autocraft 1.5 amp battery charger manual
Most Autocraft 1.5A models use a simple light system to communicate status: Autocraft 1.5 amp battery charger/maintainer manual Many 1
Keep this guide saved, and always follow the polarity sequence religiously. A lost manual doesn't have to mean lost knowledge. Now you have the complete operational and safety reference right at your fingertips. autocraft 1.5 amp battery charger manual