Main Beam indicator light

Hi there my main Beam blue warning light has stopped working on my Mk1 gti cabriolet 1987, main beam works OK just the blue light. Also my indicator warning light glows dim all the time but the indicators work fine. Any ideas? Thanks in advance

See this for the blue light;
https://vwgolfmk1.org.uk/forum/index.php?page=topicview&id=chat%2Fgeneral-chat_3%2Fmot-advice

check earths for indicators