Poorly car!

Smartmans car has developed a very irritating and frustrating fault.....some times the indicators, heating fans and dipped headlights work and sometimes they don't! He has spent hours stripping it down cleaning all the electrical connections and putting it back together again...hurrah! it works.....oh no it doesn't! So this is his last ditch attempt before he has to admit defeat and send it to the garage :( I only hope he can remember how to put it back together again!!