Sonny

For DC: bridge rectifier, resistor and LED.  For AC: capacitor, diode and LED - diode reversed and parallel with LED.
 
Depending on the voltages, I can draw up the diagrams and suggest component values.  Tell me if you require it for AC or DC and what the maximum voltage across the fuse would be if it blows.

A big thanks to members of this forum for all the guidance. My installation is 99% complete. I just have cosmetic things still to do.
 

 
The panels are 250W Yingli panels on a frame facing true North and I am able to alter the tilt to suit the season.
 

 
Still need to use cable wrap to tidy this up and fence it off.
 

 
Although weatherproof the combiner box and wiring to be covered to protect it from the sun. Plastic becomes very brittle in the Karoo and that insulation will perish in the sun.
 

 
Inverter DB and batteries. Was pleased as managed to mount the DC circuit breaker over the armoured cable as it enters the house. I think it looks neater. Need to get flexible conduit big enough to take the 16mm cables from the PVs. The batteries are 4x12V 260 Ah VRLA batteries. The battery box is made from scaffold planking.
 

 
My mother-in-law and wife punishing the system on day 1 with microwave and hair-dryer on at the same time. Need to do solar 101 with missus and her mother again since they have just failed. Still managing to get 1.7 kW from the panels mid -afternoon. I was getting 2.24kW at midday.
 
Very chuffed with the system.