Newmar NS-12-20 StartGuard [NS-12-20]NS 12 20 StartGuard The abrupt DC system voltage drop that accompanies engine starting can cause micro processor driven electronics aboard vehicles or vessels to "dump" programmed memory. StartGuard solves these problems by providing supplemental power to sensitive electronics while the engines are cranking. Newmar's NS 12 20 StartGuard supplies backup power for electronics during engine start. Mounting Mount the StartGuard in any convenient location,