Hi thanks for all the replies, the LED segments are multiplexed, one side is darlington transistors and the same drive as filament lamps-limited by a final resistor. The other side is driven by smaller transistors also then limited by resistors. So would that mean the total current is limited and not to worry?
I know modern LED indicators are super bright compared to older but just thought I'd better look into these being brighter.
I will use a phone charger and measure the current on one of each on my bench if that's acceptable?