ok so i just did a swap on my head unit and there seems to be a problem...the problem is when i turn off my car the back light never shuts off...like the original one would shut off but this one wont and im affraid that it will kill my battery any sugestions on what i should do? the aftermarket head unit that came wiht my car when i bought it i believe is hooked directly to my battery cause i can turn it on with out my car turned over