the problem starts when you get an electrical gremlin.
Agreed, but this is where specialist auto electricians come into their own. They have a set of knowledge, tools, knowledge and experience that the average vehicle mechanic simply doesn't possess. It's often better to just get a mobile tech to come to you rather than trying to find a Morgan dealer with the requisite resources.
I believe that the vast majority of electrical problems are caused by moisture or oil creeping in through weak points like connectors, most of the rest are due to vibration/chafing of poorly-secured wiring, a few are down to poor shielding or potting, and only a small minority are down to actual failure of electronic components.
One of the things that does tend to make me a bit grumpy is the wholesale component replacement approach to fixing vehicles. I completely understand that it's probably cheaper to just unplug components and fit new ones instead of paying £100+ per hour for a technician to fiddle about tracking down what the actual problem is, but it seems pretty wasteful to me.
