Worklight won't light up

[Herbert305 0]

The worklight only seems to light under very specific power conditions.  When I place it in a socket or connect it directly to a platform that is getting direct power from a generator or battery, it works fine.  It will also light up when plugged into or connected directly to a vehicle,  However, when I connect to power more indirectly, through an extender or to a platform that is only connected to a power source via an extender, it refuses to light up.  This is the case even when I ensure the power in the lines via the connector are flowing towards the worklight.