Multifunctional Battery,Leakage switch Strong conductivity/Quick power outage/No leakage and not easy to corrode Product name: Universal battery power-off switch Product function: Power-off protection Installation details: 1. Disconnect the your vehicle negative pole 2. Insert the gasket from the bottom of the switch near the fixing screw 3. It can also be installed with a wire nose Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Black Material:plastic Package Contents: 1 x Universal Car Battery Disconnect Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.