I'm trying to replace the bulbs for the HVAC controls on my '93 Z24. I pulled out the bulb and checked the manual which says it is a #74. However, all the #74 bulbs I've seen in stores and online have the "wedge"style connector where the two prongs are encased in glass. The bulb I pulled out just has the bare prongs and two holes in the circuit board to plug them into. Did they change the style of connector since 1993? How can I replace these bulbs? Thanks!