Okay I have a 78 monte carlo with a new light switch. I suppose the wires could be crossed somewhere ? I need to ask does anyone's parking % tail lights come on when you turn key to on just the parking front and rear . If I'm not crazy they should not come on when light switch is off and key on unless you pull the light switch to the first notch...but that'd what's happening .someone say this is not the norm I then will do what is nessesary disconect sections and see were it's crosesd no the head lights do not come on whens it's doing this