Nick M Alvarez

On my 67 mustang ,when it running, the headlights are on but very dim but the headlight switch is off and right turn signal light on dash ur on too.headlight switch replaced 2 months ago. Need help fixing this issue.

sremle

This could be a grounding issue. Another fix is wiring the headlights with a relay. This way the headlight switch is only energizing only the relay and not two 55 wat headlights. Be sure the relay will handle more than the wattage of your headlights.