Led flasher on BT master socket

[seasideskippy]

Hi I have a customer who want a flashing light in his workshop when his phone rings. I have purchased an LED flashing unit and connected it to the pings 3 and 5 on the lju. The Led flashes but not very bright does anyone know how I can get more voltage out of the capacitor?

 

[sbcsu]

A telephone with a built in LED Flashing light

https://www.ligo.co.uk/data/manuals/BT Big Button 200 - User Manual.pdf

 

[Yorkie9]

How about something like this?

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or

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