Bought a s/hand 90 model 4runner, got it home and discovered the highbeam does not work. Low beam does and when u flash both low and high work. Fuses are fine, bulbs are fine, cant find a seperate high beam relay, cant find light earth, have removed the dipper switch and checked the contacts and they are fine, have power at all 3 contacts at the headlights, cant work it out. SOMEBODY HELP