I need to know if any of you Honda Heads have had or heard of this issue. My headlights which are one-piece projectors are acting weird. When I turn them on regular the left High-Beam comes on and the right headlight does nothing. There is no voltage at the Right headlight harness. When I turn the High beams on the left headlight does nothing and the right low beam comes on. No voltage at the left headlight harness. I can normally solve little electrical problems like this rather quickly, but not this time.


I have checked all 4 headlight fuses for continuity and the 40A one under the hood. Is there a relay somewhere? I didn't see one in the wiring diagram for a 1993 Civic USDM. Could it be the steering column switch itself? I did not notice it until I did a complete stealth Viper 791xv install. I put a lot of wiring behind the fuse box, so I completely unplugged and removed it to hide wiring looms. This was my first alarm install and it works perfectly. The headlights worked fine before the install. I didn't cut any headlight or horn wiring nor did I add any relays. Does any one know which harness behind the fuse box includes headlight wiring?
Any help would be great.

 

It is probably the projectors itself that are giving you the problems. Plug your factory lights back in and test if it is still giving you the problems. If not, then you know it is the projector setup.

 

I'll try that tomarrow asiandoood. I swapped combination switches with my other 1993 civic and the problem is still there. So it's not the switch.