My passenger headlights went out both hi/low beam

2005 HONDA ACCORD
189,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
Avatar
420CHONG
  • MEMBER
  • 2 POSTS
My passenger headlights went out both hi/low beam. bought a brand new bulb did not work. changed headlight switch and relays no luck power is coming from the under hood fuse box for all headlights no voltage from the socket wires. do I need to check the wire harness or if there’s a break somewhere? Any help would be appreciated thanks.
Apr 12, 2021 at 10:55 AM
Advertisement
Avatar
STEVE W.
  • Experienced Mechanic
  • 15,330 POSTS
Did you check the fuses 5 and 6 that power the light? I would take a test light and test them first, then you need to determine why they blew if both are bad. I would suspect a bad ground if both are bad, that would increase the current draw and could blow the fuses.
It won't be the relays or the control module as those control both lights, they don't split until the fuses. If it was a relay or control both sides would be out.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check the fuses and then go to the light and test the black wires that are the ground leads using the test light connected to battery power. If the light works on both then the ground should be okay and it was the fuses. One thing you might try, take a couple pieces of wire and jump the bad bulb to battery power and see if it lights or not.
May 17, 2021 at 4:56 AM
Avatar
420CHONG
  • MEMBER
  • 2 POSTS
Hi Steve, power is coming from all headlight fuses no blown fuse, no power coming from the wires that are connected to the socket I used a led voltage tester for that.
May 17, 2021 at 4:56 AM
Avatar
STEVE W.
  • Experienced Mechanic
  • 15,330 POSTS
Okay, then there is a break in the wire harness feeding that light, has the car ever been hit on that side? To find it you will need to check along the harness and see if you can find the spot where it is damaged or corroded. The diagrams don't show any splices or connectors in the wires all the way back to the fuse boxes, that doesn't mean there are none but I suspect there are not any. Another test just to eliminate a potential issue, remove those fuses, then look for any corrosion or damage to the contacts in the box. Attached is the harness routing.
May 17, 2021 at 4:56 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.