Long story short, I put some 3157 amber LED bulbs in my clear corners last weekend, and did the EP28 flasher upgrade. All is good except that when my park lights are on, they are backfeeding and dimly illuminating my dash signal indicators.

I'm thinking that worst case I could wire in a diode at each light socket, on the signal wire (might as well do the park wire while I'm in there).

Has anybody ran into this? I can't be the only "special" Grand Prix out there.