doctorbubbles

so my instrument lights dont work accept for the tachometer lights, before they all went out, they would flicker and get dim then they just went out, first it was the gas gauge and temp gauge lights then the speedometer lights went out, i took it apart and the instrument panel is made by denso and the lights are 4 blue little bulbs in a square, theres like 6 of the light clusters, and on the tachometer lighting only 2 of the four little lights light up. Im just wondering if its a bad connection to the lights or the bulbs are burnt, and if they are burnt where should buy new ones, i didnt tear it all apart because i didnt have time.