Have high no low beams. pulled lights out & both high and low work,pulled out dimmer switch took apart and cleaned all terminals,checked power at conector have power to high beams and pull back,but no power to [ purple wire with white stripe,wich is ground wire color on headlamp] alow beam. tried to hot wire through harness conection but coul only get high beams. looked for low beam relay could not find any. checked fuses all good. i'm at a total loss could someone please help