After fixing electrodragon SPDT double relay board it is time to add some addition functionality.

Board has 4 leds – power, eps status, 2 relay status but when cover is on – they are hidden.
So i decide to make it visible.

1st – bought transparent plastic stick for flowers and cut it to fit. This will be light conductor. Like fiberoptic wire.

With thermal glue fix it in cover. Add non-transparent piece of plastic card to remove parasitic illumination from other led.

Wait for glue to cold and put the cover back on board.
Status led is blinking when connecting to Wi-Fi and MQQT. Nice

Relay 1 is ON

Both relays is ON

So it works as I want.