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H4 conversion issue...need some help......

  #11  
Old 04-04-2013, 09:50 PM
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Remember that the female and male plugs will be opposite.
 
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Old 04-04-2013, 09:55 PM
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Yes sir indeed...

I searched the web and got conflicting info on what was what...more than likely because of male vs female. The son of a gun part of it is, that the info I found, didn't say "plug facing you or back of plug"....the reason I put pictures and described as such in my post to get accurate info from the troops here.

I am really hoping to get this project completed Saturday.
 
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Old 04-04-2013, 10:05 PM
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Well seeing as I have a car, that came stock with 9007 bulbs, and which I have converted to H4 for my hid harness, I suppose I'll get off my a** and make sure for you.
 
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Old 04-04-2013, 10:09 PM
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That would be super!
 
  #15  
Old 04-04-2013, 10:22 PM
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Originally Posted by Maxboost25psi View Post
Hello Gang!
H4

Plug facing you " l _ l " :



Plug facing you like the one on the right:

l _ l
High Low Grnd


Now the 9007 end

Plug facing you / clip up:


For my 9007s on the plug like it is on this pic^, it goes like this:
* * *
High Grnd Low
Check the red.
 
  #16  
Old 04-05-2013, 10:32 AM
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Awesome...I shall converet my harness this afternoon. Cant really do much with all the rain were having lately.
 
  #17  
Old 04-06-2013, 08:27 PM
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Well....here is the latest and there is no improvement with my issues....

I have correctly identified and wired all connections on the LMC harness with that of my H4 conversion harness connectors, as well as the stock wiring harness for the Blazer's headlight.

The headlights power up and work perfectly on Hi-Beam, but the Lows are so "low and dim", that I declare the Blazer unsafe to operate in low light conditions. I swear to you all, that the low beams give out just about as much light as an old school D-Cell battery operated flashlight. The light in the headlight housing themselves looks good, but they just don't throw out enough light in my opinion.

To help rule out some things, I pulled DRL fuse, reinstalled it for crap and gigs and there was no change. Got the best possible grounds I could and still complete poop on low beam.

The only thing I can figure is maybe something in the wiring for low beam is jacking everything up, but I thought for sure the LMC harness would fix that..but its a no go...

I boxed everything up and threw in the garage (out of sight...out of mind), because the whole electrical thing gets me torqued...I don't do electronic worth a flip.

However, if you folks would like to throw some ideas around feel free...I may try again after vacation............

 
  #18  
Old 04-08-2013, 02:48 AM
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Well the lmc harness should take any wiring issues out of the equation. I'm sorry it didn't work for you. If you can, get a DMM and measure the voltage for the low beam (or have someone you know do it) and see what it says. If it's at 12v then I'd suggest going with higher wattage bulbs.
 
  #19  
Old 04-08-2013, 04:49 PM
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Is there a metal "hood" inside the conversion housing? If so, you must make sure the housings are oriented properly. Headlights work on what is called a catadioptric reflecting system, where they bend the light around and back onto itself in a way as to leave minimal amounts dead spots in the field of light. If the housing is upside down, it will bend the light the wrong way, usually almost straight up or directly onto the bumper. In H4 bulbs, the high-beam filament is closer to the reflecting surface, changing the way the light reflects and giving a larger light field, thus, increasing the error allowance. Try flipping the housings and see what happens.
 
  #20  
Old 04-09-2013, 07:55 PM
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Thanks...may give that a whirl...the headlights themselves were marked "TOP", so I placed them in to the buckets per its direction. The bulbs themselves only went in one way.
 

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