head lights out!! - Honda Prelude Forum

remy525 · 03-13-2007, 12:35 AM

hey i did the engine cleaning thing posted here and when i started the car, at first the headlights worked but i clicked them off and when i clicked them back they dont work. the sidelights work and the bumper ones too even the highbeam works but the regulars are out. when i turn the knob i even hear the actuator click but no light. i checked the fuses but didnt see a spot for headlight but non of them were burnt either. any help apprieciated.

jsmooney · 03-13-2007, 10:30 AM

my lights didn't work and i checked and changed a fuse....it was a 20A fuse under the hood. That was for the other lights.

PreludeDude01 · 03-13-2007, 10:38 AM

Check you headlight relay in your under hood relay box.

remy525 · 03-14-2007, 03:25 PM

checked all fuses they work fine, there is no headlight relay in a 4th gen the relay under the hood is for the interior lights, and it works. any other suggestions?

spin_r_g · 03-14-2007, 04:26 PM

If the first time you turned on the light and they worked and now they don't but you still hear the relay clicking then it either has to be the fuse or the bulbs. Double check the connections to the bulbs as well. Do you have a mutlimeter?

remy525 · 03-14-2007, 04:37 PM

no multimeter how much does one cost?

PreludeDude01 · 03-14-2007, 06:03 PM

^ You can pick a good one up at Walmart or Sears for around ~$20.

Water might have seeped through some wires and caused a short. Check for continuity of all leads with the multimeter.

remy525 · 03-14-2007, 10:35 PM

and if that is the case then what do i do? do i have to replace the whole thing?where do i start checking?

that really sucks.. my engine isnt even that clean. the armorall made all my hoses have this white film on it. don t do the engine cleaning it bites

G_Loc · 03-15-2007, 11:38 AM

Quote:

Originally Posted by remy525

and if that is the case then what do i do? do i have to replace the whole thing?where do i start checking?

that really sucks.. my engine isnt even that clean. the armorall made all my hoses have this white film on it. don t do the engine cleaning it bites

Check the relay in the fuse box. You said there isn't one for the headlights, but there IS.

Are you sure both bulbs didn't go out? Sounds unlikely that they both went out at once, but you never know...

PreludeDude01 · 03-15-2007, 03:06 PM

^ I knew there had to be one. Most, if not all, cars have them. At least all the cars I've worked on. Never worked on a 4 gen.

You can check for continuity by connecting the positive or negative terminal of the multimeter to one of the main wire of the headlight harness. Follow that wire to where ever it ends and connect the other terminal of the multimeter. You should here a beep or see a light if there is continuity. Do this for both hardness / each wire. If there all good, move on the the relay wires.

Note: Not all multimeters have this capability. Check before you buy.

** It's always best to disconnect the battery (and take it out, IMO) before doing any hardcore cleaning in the engine bay (ie. spraying with water, etc.) Let it set to dry for a couple or hours (at least a night) before you but the battery back in so the water drys. I have seen countless problems with people having something go wrong because the didn't cover the alternator, wire harnesses, etc. I can tell you from experience since the first time I did clean the engine bay, I blew up the AC climate control unit. I spent all summer figuring out what was wrong and in Texas, summer heat is murder. **

remy525 · 03-16-2007, 10:10 PM

all my relays look fine there not burnt or any thing soo i dunno but it sucks because i cant drive at night.

PreludeDude01 · 03-16-2007, 10:30 PM

^ You have to do a test. You can't tell a relay is bad with just looking at it.

Relay Test: Testing a relay
How To Fix: HOW TO: Fix A Bad Relay