My first instinct was run away, this guy is pulling everyone's leg.
Then while the wisenhiemers where having fun, I thought maybe what we're dealing with is just a little no comprendo.
Then it got more fun with the quack doctors and their mad elixer cure all,...
However it seems what the real situation is a lack of comprehension about electricity. The starter relay short should be easy to spot. But without understanding circuits he's got a learning curve if he's going to get anywhere. Anything with the parking lights and turn signals can be complicated too.
I'm going to try to push him toward step one. We'll see what happens..