i have a 1988 ford thunderbird with a six cyl. the fuel gauge and most stuff is analog but the speedometer and odomotor are digital . the bulbs burned out and i need to change them. my buddy said buy the bulbs and ill do it. does anyone know what kind of bulb it is. i went to the auto parts store and they were clueless. ford wants 25 bucks a bulb and wont tell me what theyare only they are halogen. anyone know. thank you