Hope someone can help on this one. The brake lights on my Shelby have acting strange lately. The brake lights seem to be operating just fine untill I turn on the headlights. Then the brake light filaments of the rear bulbs gets dim on the inboard light and gets progressively dimmer as is goes outboard. So much so that the last bulb barely lights up at all. With the lens in place, the brake lights are non-existant. I've tried an NOS headlight switch and it actually got worse. While testing with a meter, I discovered that by messing with the grounding of the housing, the bulbs got alot brighter. So the real question is, how can I re-ground the light system to make the lights work correctly. Thanks for any insight on this.