Introducing FREE FREIGHT OVER FORTY! Orders over $40 will be eligible for FREE GROUND FREIGHT in the contiguous 48 states.*
*Some restrictions apply. See the shipping policies page for details.
Allows user to track electrical system voltage on any vehicle with a normal 12V charging system
When the normal green light is on, the system voltage is normal and the battery is being charged correctly; if the high red light is on, the system voltage is too high and damage to the battery may result; when the low red light is on, the system voltage is too low and the battery is being discharged
The above indications are only valid with the engine running