Quote Originally Posted by MRJB1929 View Post
Hey Chev Malibu,
I've been out of touch for a while so no response from me. I do know what a keep alive is and have extensive experience in this area.

Where I am coming from, is your keep alive will be feeding a ground to ALL Circuits via the low amperage fused line. Not just the few that you intended (i.e. radio), but rather everything. A keep alive is generally directly wired only to the items that need power to keep the memories active.
That would probably be the ideal way to do it, and since at this point it is really only the computer memory that I need continuous power to, I may be able to fish a wire to it. As it would only be a ground wire, this may be far easier to do than a positive wire. I hate tapping into a computer wire in general, but the ground should not be a problem.

If you have the master switch wired to the ground and use a keep alive to supply a fused ground line you are essentially suppling ground to everything. If you forget to switch on your master and try to start the car, you will blow the fuse on the keep alive and your memory items won't have power in the future.
That is essentially what I would want to happen, for security reasons mainly. Other circuits would be fused, so if a short developed somewhere in the car, say while it was sitting in the garage, either the keep alive fuse, or the items own circuit fuse should blow..(I hope)..Would you agree?