the gizmo is for "Auto-off" for the aux lights (or accessories of you choosing) with the key.
In this drawing I have my also have my USB on an SAE direct to the battery (always on).
Originally Posted by roundtripping
Please explain what's happening in this picture to someone electrically retarded like me
I want to be able to leave my USB adapter plugged in all the time! I have a slightly different setup though, SAE pigtail straight to battery with SAE<->USB adapter plugged in at the other end. Would putting one of these gizmos in between the SAE pigtail and the battery help in my situation?