Yes.Has anyone built a plug like adapter to disconnect easily?
Yes. Definitely put on on the constant 12v line. The debate is out whether it's needed on the ignition-controlled ACC line.Did anyone put a fuse(s) inline?
A 25A or 30A fuse WITHIN 18 INCHES OF tHE BATTERY would be sufficient.What size? I see the M4 has a 25 amp on it.
Remember that the fuse is to protect the wiring, not hte equipment.
Do you really need an enclosure?what type of enclosure is anyone using? I want to install in my dell and is there an easy way to install?
And you're going to have to get to fabricating. There's no easy means of installing.