Hello to all,

First, great forum, great info.

I have a 97 accord with some high beam headlights issues.

I think the headlights are stock. It has 2 light bulbs, one with 3 pins, one with two (at the "inner" part). When i turn high beam on, the 2 pin lights will turn on but no changes on the 3 pin one. Guess i have an electric problem somewhere. As i don't know a thing about cars i really don't know where (dimmer relay, light relay ??).

As the 2 pin high beam is working, could i make a "Y-wire" (sorry, English isn't my mother tongue) and connect one on the 2 pin as now, and the other on the 3 pin bulb ? Knowing a bit of physics, wouldn't this give less power to both of them or worse not work at all ?

The best issue would be to have electricity coming to the high beam on the 3 pin with the wires as the are now. But i'm not competent enough to solve that on my own.

Thank's for reading and big thank's for any answer, suggestion.

Regards

 

sorry, i'm not following you. the high beams aren't working, or low beams?

 

Hello,
Thank's for reading.
The "normal" lights are ok (turns on the 3 pin bulb on "low" position). The 2 pin bulb stays off.
Normal lights on, I turn on the high beam. The 2 pin bulb will turn on. On the 3 pin bulb, nothing happens, the "normal" lights stay on but don't come to "high" beam. It was tested, there is no electricity on the 3rd wire of the 3 pin blub.
So was thinking to wire it from the 2 pin bulb having a kind of Y wire ?
Might go take picture and photoshop what I was thinking of.
Thank's for output

 

can I get more info, is this an EX, DX? 2 door, 4 door?

 

It's a vetc-E, 2.2 l, 4 doors, right hand side driving, auto transmission.

Here's the picture of the light (left side of the car - passenger side) with what i was thinking of doing.



http://exportsiam.com/portfolio/disp..._display_media

Hope it helps...

Thank's !

 

Here you'll find pictures of the car :

http://exportsiam.com/portfolio/thumbnails.php?album=6

Thank's for helping !

 

I think that will work fine. I tried to find a wiring schematic, but all I can find is for 2 pin bulbs.

 

Thank's for your answer. Will try it and see what happens... Was just thinking, remembering my physics classes, that power is intensity by tension (P=U*I in French (i'm swiss)). So having more U (2 bulbs instead of one) and the same intensity (I guess?), the power would be lower. Edit : the power needed would be more and that is not the case, so the light would "shine" less... Really not clear :-))
Will try it (fun to do) and see... will come here for an update once done (blown? :-)))
Cheers

Edit : but in class i was sitting in the back next to the radiator, so my physics.... hmm...

 

This is correct behavior.

The United States (USDM) uses a different type of bulb than Japan and Europe markets. We have 9005 and 9006 bulb types and only two wires go to each. When you engage the high beams, foglights (if equipped) turn off and the inner bulb turns on. The regular low beam also remains on.

Your lights are H1 and H4. H4 technically are dual filament and can also be a high beam (hence the three pins.) Normal behavior though should be that those remain just as a low beam and then the H1 bulb turns on when you go to high beams

If you really wanted to, you could probably setup a relay to trigger on the high beam (H1) connection and have that power the third pin on the H4 bulb to have two high beams. I would not directly splice into the high beam wire on the H1 bulb like you have illustrated. If you get a relay, use the signal from the high beam (H1 bulb) to energize the relay but have the power source pull from the battery or fuse box.

 

Hello,

Thank's for your answer. Still didn't try the "mac gyver" Y wire solution and guess things would maybe not go so good after.

Yes, the bulb with 2 pin (high beam) is a H1 and the other, where the high beam doesn't work is a H4.

As I'm in Thailand, it's a bit "different" to have things done well, if you get me. That's why I want to try to do it myself. I got the H1 high beam by luck because I'm stubborn. I've been to 3 garage, one "expert" in car electricity and when they saw the car, the answer was "we cannot do". Actually I just bought 2 H1 bulbs and fited them in as there were none !

But having the H4 high beam working too would be fun and more secure on Thai roads at night.

I've seen on anther post on this forum that it could be the dimmer relay ? Would that sound correct to you. At one of the 3 garage I've been to, they tested the 3 pin plug and one had no electricity (guess the one for the high beam).

If I could find out from where this problem comes, then no need to setup a new connection.

If I would setup a new connection, is it easy to find the good relay ? Actually I have no idea how to plug a relay, nore how it works. Don't bother to answer this if it's too complicated for a noob like me

Thank's for having taken time to answer, cheers !

 

I think you may not have completely understood my post, or maybe I didn't make it clear. The vehicle, from Honda, in no way is set up to light up the second filament (high beam) portion of the H4 bulb. It just was not designed to work like that. The dimmer switch has nothing to do with its function (or lack of.) So there is no problem with the third wire, it is supposed to be like that. Your headlights are working 100% as expected.

If you wanted to have the H4 bulb act as a high beam as well, the easiest way would be to have a relay that when you activate the high beam stalk on the steering wheel energizes it and it switches to allow power to flow to the bulbs. It's been awhile since I have played with Accords but essentially it would be

Battery (+12V) -> Relay pole
Ground (-) -> Relay pole
Input (high beam wire/trigger -> Relay pole
Output Relay Pole 1 -> H1 high beam
Output Relay Pole 2 -> H4 high beam

That would be a DPST relay. The two poles would go from open (when high beam is off) to closed (high beam on) and allow the 12V from the battery to power them.