hey everyone just an update: apparently changing tiny leds on the board is an easy thing for someone who do soldering. managed to find someone who changed tested and replaced all the leds using cheap chinese leds. it is much brighter now. me and him had minor issues when we re assembled the needles back but fixed it after watching on youtube. taking a picture of the illuminating bulbs before taking it apart fixed confusion when we put back the needles. mine has digital odometer and the main thing is connect the gauge without front glass part and turn the key to on position then put back the needles otherwise needles wouldnt work properly. hope it will help someone in the future and most importantly thanks everyone for their advice