[motto]

Hi Pete. That certainly sounds to be an intriguing problem and I would guess that you have a thermal circuit breaker with too low a setting or the system is experiencing an overload and the breaker is doing what it ought to.

I think the way to proceed would be to get to work with a test light when the power is disrupted and find the point where it stops. I'm not familiar with CMPs but US military vehicles had the CB mounted on the main light switch. The fact that your trafficators still operate also makes sense because they are an add-on and obviously not getting power from the light switch but probably direct from the ammeter or ignition switch.

David