Featured Projects Model A roadster pickup (Help/Advice needed)

Decided to fit up the nicely painted head light stands I bought and replace my dodgy home made units,
One headlight much dimmer than the other. Put my multi meter between the light bucket and a clean ground on the block, read 1.3 volts, bad ground, looked in the bucket no proper ground from the lamp holder. And thick paint on all surfaces of stands. Ground wires installed paint removed from some contacting surfaces. Now lights bright (for 6volt) an voltage of 13 millivolts between buckets and block.