As a quick test to see if the ground was an issue, I tapped into the heavy green ground wire that came out of the back of the connector and ran another ground wire to the frame. Still didn't make any difference. However, I noticed if I switched from low to high beam with the headlight assembly unplugged, the blue high beam indicator illuminates on the dash. With the head light assembly plugged in, the indicator does not come on when I switch to high beam. I'll try swapping relays and see if this make a difference.