roadmaster members save off installation workeasyond invisi brake fully automatic connects directly to the towed vehicle's battery and trickle charges the battery during towing led monitor inside your rv shows braking activity and sounds an alarm if the brakes are activated too long • nothing to put in or take out of the vehicle to tow or to drive • no on or off switches to remember • activates only when rv's brake lights illuminate-no false braking! 'active' braking systems includes emergency break away system • easily adjusts to individual braking preferences includes emergency break-away system trickle charges towed car battery while towing invisibrake 2' and 27" hitch balls the snap l-pin makes hooking up faster and easier by replacing the standard camco life is better at the campsite hitch ball cover lets you showcase your love for rv camping while providing a custom look to your vehicle while towing