The most popular choices for these bulbs are 1034 and 1157. The 1157 is brighter, pulls more current and probably will blink faster than the 1034 type. If you have a mix of bulb types, it could create the situation that you have.
A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Come join the discussion about restorations, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more!