67 Camaro headlight grounding issue

[Jr]

Hello,

I have a ground issue with my headlights. Please help. I have LED headlights that flash/pulse when I turn them on. I attached gator clips to the driver side head light ground wire located on the core support to the lower control arm nut, and the headlights turned on as they should. The problem is, when I touched the lower control nut, the gator clip would spark at the nut. Is this normal? Where else can I run a “good ground”? Should I drill a hole in the subframe?

Any help would be greatly appreciated.

Respectfully,