anyone know of the clip that holds the harness onto the bulkhead frame doubles as an earth?

i swapped pretty much everything. the netrual safety switch was totally stuffed so i replaced it and it was working.. monumentality. I changed the indicator/horn contact mechanism trying to fix the horn and yeah, maybe set off the safety switch again.

ive run an earth direct from battery to harness earth on a-pillar trying to earth the instruments better. no improvement.