One of the first mods I do to my occasional use vehicles is to fit a battery disconnect. I had a car 'spontaneous combust' years ago due to a short which occurred while just sitting, and ever since I've been perhaps a little overly cautious.
In any case, I fitted a switch to the M3W which is not all all visible when standing outside the car, but is easily reachable from the drivers seat. The original ground cable was used for one run to the switch, then I made up a new cable to connect to the battery.
I have a couple of photos to post, but have not yet figured a way around the 1kb file limit.
