Simply clip the booster clamps across the battery, and when the green LED illuminates the system is then protected from spikes and surges while the vehicle is being worked on.

Goodall 12/24V AntiZap Surge Protector, with clamps and 18" cables, protects systems from spikes and surges while the vehicle is being worked on by simply clipping the booster clamps across the battery. Body shops and muffler shops can use this Service Minder when carrying out all forms of electric welding on a vehicle, including Tig, Argon Arc and Mig, with the battery connected! The Service Minder not only protects the on-board electronics but dispenses with the need to disconnect the battery, preventing lost stereo and other electronic memories. The fully-insulated booster clamps also come with 2-function Antizap protection.