On Tue, 4 Dec 2012 05:51:37 -0800 (PST), Chris Holmes wrote:

I was wondering if it might be wise to place a small mains bulb across
the pump motor, to indicate when the motor has power but doesn't
actually run.

Oil pump? Or water pump?

Well it'll be the fan motor that also drives the oil pump.

Forgot to say that a neon screwdriver would also serve as mains on
indicator to save faffing about with bulbs etc...

--
Cheers
Dave.