I had this posted in electrol forum,but no one replied to it , so im trying here,
My son has a 1996 Toyota Tacoma 4x4 ext cab truck engine 2.7 His headlights only work if you pull back on the light control switch ,which is the flash position. I bought another light control switch, and it still does the same thing. all fuses and relays are ok, with the lights turned on ,theres only fire at top terminals on both headlights., theres 3 terminals on the headlight bulb. any advice would be great.