[lighter]

So i recently got this turbo timer and installed it properly and it worked fine the first time i turned off the car, the problem im encountering is that my ground wire came off and wen i went to put it back it stopped working properly. It still turns on and changes through all the settings, only problem is when i turn off the car it doesnt use the timer to shut off the car? can anyone give me an idea as to why?

Any help would be appreciated, i searched on google for any other things that i can find and searched here and couldnt find anything.