Yes, I know. It wasn't a bad ground... just old wiring and a "sketchy" design that took power from the battery, through the headlight switch (at full blast), and then all the way up front to the headlights. I installed my relay harness with Bosch relays and now power runs directly from the battery to my headlights, activated through the relays (which get their signals directly from the original headlight wiring). No muss no fuss... 20-minute install... a fraction of the "juice" now runs through the headlights switch... no need to "hack" into your original wiring... original wiring and headlight connectors are still intact so if in the unlikely event that a relay fails, I can still plug the original wiring into the headlights to get me where I'm going.
If you haven't done this simple mod/upgrade yet (for under $20), you should! My headlights are now AWESOME! After the headlight relay harness, I decided to install the H4 conversion headlamps too. Even better (and another modification that took just about 20 minutes).
As always when working under the hood, just be mindful of the positive battery terminal. It's surprisingly easy to drop something across there and short it to the chassis ;0)