I have actually found it handy a few times to have the lights on for a few and not have to worry about manually turn them off. It doesn't hurt the battery at all, And if it did manage to run down your battery you need to replace the battery.

 

Yeah, there's auto cut-off of like 5min after the key is turned off. Not sure on the time? I just been in my truck with the radio couple of times when it cut off. Same with the dome light. During my box install I had to shut and then re-open a door for the light to go back on every so often.

 

Yup, does it to me when I need my bed light for awhile.

 

agreed. Isn't the CTM such a nice box to have (at least, till it dies)