Power Cap

Im new to this thing and have a question and need some help i have a 2001 honda accord and i have a system in it. i just bought a power cap today hooked it up and everything but when i shut the car off my led display on the power cap stays lit. usually they go off after like 30seconds or so but for some reason mine has been on for the past 2 hours without me being in the car any help would be great thanks

what is your cap for ? Most people figured out like 10 years ago, they were just for the car stereo companies to make money off of. Occassionally they help with headlight blinking but that's pretty much it.

What do you have connected to the cap, that may give a clue as to why the display stays on