I have a weird electrical fault which causes the engine to cut out on my VR6 with no warning! It seams to die and all the dash lights don't illuminate! It's a random fault but becoming more frequent, now it's undriveable, it cut out on a roundabout today and I had to have it towed. Sometimes it restarts by cycling the ignition sometimes the dash lights don't come back on but it will still crank but won't fire.
So far I've replaced the battery, alternator, ignition switch, indicator stalk and cleaned the battery connections. It seams like the immobiliser comes on? It has an aftermarket sigma alarm/immob, but this arms and unarms fine, I can even hear it click when the dash lights aren't on.
Any ideas what it could be? I was thinking a fuse able link? If it has one? Or a fuse box problem?