Just connect the earth to the body. The mounting screw for the new indicators should be sufficient.
I might go inside the headlamp and trap it under the headlamp mount nut (which acts as an earth for some stuff I think) since the indicators will be mounted to a powdercoated bracket most likely. Between the metal nut and the plastic headlamp shell would still earth it right?
I might go inside the headlamp and trap it under the headlamp mount nut (which acts as an earth for some stuff I think) since the indicators will be mounted to a powdercoated bracket most likely. Between the metal nut and the plastic headlamp shell would still earth it right?