i am working on a 91 s10 pickup. i replaced the factory radio on the 4x6 speakers in the dash. when i removed the cluster i noticed everyone of the backlight bulbs was blown. i replaced the bulbs. when i put the cluster back in the speedomeeter, gas gagues, and all other gagues dont work, the check engine light is on along with the battery light. the blinkers do not light up right on the cluster, the left blinker doesnt light up at all, the right blinker makes the brights indicator blink, and the brights switch makes the right blinker light come on constant. all the blinkers and lights/brights work on the exterior its just the cluster thats messin up. Thanks