2001 headlights not working - Blazer Forum - Chevy Blazer Forums - In any case, i assume the following step might be to check for energy at the headlights themselves, with the switch grew to become on. I think that electricity is there and you aren't getting a ground, which has to return through the dimmer switch (transfer for high & low beams). On this website we advise many designs about headlight transfer wiring diagram that we've got accrued from various websites of wiring diagram collection, and of path what we recommend is the most remarkable of layout for headlight switch wiring diagram. If you want the layout on our website, please do not hesitate to go to once more and get inspiration approximately wiring diagram in our internet site. You can see the color of the wires at the schematic. So if you stick with the low beams, electricity ought to be on the darkish blue twine at the right (passenger) facet, and yellow with a black stripe at the left aspect. If the dimmer transfer is terrible (or not connected ground), then the yellow wires will also show about 12 volts when the mild transfer is on (electricity is going thru the filaments, but has no route to floor). Thanks a lot for taking it slow and understanding to help my worries. Not handiest did you answer my questions, you even took it a step in addition with replying with extra pertinent records i needed to recognise.
What i would do is switch on the headlight switch and take a look at for electricity at the 2 headlight fuses. Then, just as a brief take a look at, provide the headlight strength and ground relays a "faucet" with the cope with of a screwdriver, or just a great thump with your fingers and spot if the lights come on. It simply would possibly paintings and get you going - its well worth a shot as a brief fix. Just a little heads-up ... You will ought to positioned down a deposit to view the answer(s). Then you'll be capable of decide in case you are glad and click be given if and when you are.