PLEASE don't disconnect battery terminals with the engine running- - - - -you can do major damage to anything that's voltage-sensitive when the generator voltage spikes to 50 volts or more momentarily. I've seen that on an oscilloscope dozens of times. Definitely don't do that on a vehicle with an alternator, and NEVER do it on one with a computer!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!