Fitment
Surge Protector Solar Indicator Lights: Each unit has several lights and a DC unit hooked up to a DC system will power all of the indicator lights and vice versa; an AC unit hooked up to an AC system will power all of the indicator lights. If you hook a DC unit to an AC system, however, only 1 of the indicator lights will work and vice versa, but the unit will still be safe and function
Easy to install: Some homes have surface mount electrical panels. These panels are easy to install the SPD by popping out a 7/8-inch diameter knockout hole and mounting the SPD on the door. Some homes have service entrances that are flush mounted rather than exposed. This type of installation will benefit from an SPD flush mount box. Cut a hole in the drywall near the distribution panel and mount the box in the hole. Once the wiring is complete, secure the box with drywall anchors. Be sure to plug the hole in the distribution box with a washer. All units are compatible with both AC and DC systems, the only

Notes
1.We strongly suggest comparing the posted picture to your faulty/old unit! Please kindly check your vehicle's model and confirm this item is suitable for it before ordering.
2.The product does not contain installation instructions. If you have any questions about that, we kindly recommend you go to the nearby mechanic to ask for professional instructions.
3.Installation: Easy to install, assemble and remove with great convenience, direct replacement. Highly recommended installation by professional.
4.Color Difference: Due to the light and resolutions setting difference, the item's color may be slightly different from the pictures.
5.Please allow slight dimension difference due to different manual measurement.