A bad voltage regulator can definitely cause the battery to drain in a 1985 Dodge Ram pick up. The voltage regulator is responsible for controlling the voltage output of the alternator, which charges the battery. If the voltage regulator is bad, it may not be able to properly control the voltage output, causing the alternator to overcharge or undercharge the battery. This can lead to the battery being drained or damaged.
Here are some symptoms of a bad voltage regulator:
- Dimming headlights
- Flickering interior lights
- Battery warning light is on,
- Difficulty starting the truck
- Electrical components not working properly
