Turn Signal issue

[richard444]

Ok here is one for all you elect guys (which i,m not) This just started today when i turn on my left turn signal all my running lights and dash lights flash, right turn signal is fine. Also when i turn on my lights my turn indacators both light up and all turn lights on the car light up. I have the stock mustang harness done by wire diet, using a 3 position toggle with the circuts in it and the headlight switch is from Factory Five. Any help would be apprceated or a starting point to trace this.

[Jeff Kleiner]

Start with your grounds on the LH sockets.

Jeff

[richard444]

Thanks for your help this one will stick in my mind for a while. Went to the back left turn light removed the bulb checked the ground and all was good put the bulb back in and tried the signal FIXED so the bulb shook loose?? So let me get my head wrapped around this, from reading some of the archived posts if the power can't find ground at the circut it continues around the wiring untill it finds ground and activates that circut?

[LewPoberezny]

Some times when a filement breaks it touches the other element and when you apply power it then sends the power to the park tail light circuit or vice versa.

[riptide motorsport]

Bulbs can ground themselves out. replace the bulb.