'94 Blazer full size (2 door, 350, manual). With the lights off, blinkers work great. No problems. If I turn the lights on (headlights or even just parking lights), the amber fronts come on great. If i turn on the passenger signal, it works great. But if i turn the DRIVERS turn signal, it blinks fine in the dash, it works fine on the rear, but the front amber does nothing, just on solid. But i can hear the relay clicking normally. Any ideas? I'm guessing it's a ground, but where would I look?