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LMC headlight harness

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Old Jan 26, 2012 | 05:00 AM
  #46  
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Something else to top off the relays, I like GE Nighthawk (not sport), Sylvania Xtravision (easily found at most stores), Phillips Xtreme Power or Vision Plus. These are all clear bulbs with different filiments and gas mixture. They are a little brighter. They are a tad brighter than regular bulbs. Just don't buy any blue coated bulbs, this includes Silverstar and all that stuff called hyper white etc. Those actually reduce the amount of usable light slightly, since the more yellow light is filtered out.
 
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Old Jan 26, 2012 | 07:40 AM
  #47  
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Originally Posted by ArdWrknTrk
I see in that writeup he mentions two #87 terminals.
Don't make the mistake of confusing 87 & 87A (which is NC, and open when the relay is energized)
This is how a 'Bosch' style relay is pinned out.
Originally Posted by xxshine
But why does the 87 and 87a matter ? The relays that i installed have 85 - 86 - 87 with 85 being the ground and 87 being power from battery.
The Bosch SPDT relay can -make or break-.

85 & 86 are the pulldown, 30 is power, 87A is normally closed, and 87 is the one that becomes fed when the pulldown is energized.

Here, let me Google up a couple of diagrams for you...



Here are the pinouts:
Regular SPDT relay



This is what you need to make it work.
One with 2 #87 terminals. SPST
Notice the other 87 is not in the center between the 85 & 86 terminals.

 
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Old Jan 26, 2012 | 08:02 AM
  #48  
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Must be just the different design tween manufactures. I think they all work the same way. It's just a relay with a little open - close door in it.
 
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Old Jan 26, 2012 | 08:35 AM
  #49  
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No, it is the difference between a Single Pole Single Throw relay with dual output, and a Single Pole Double Throw relay.

The terminals are labeled by convention.
It is Bosch who started with these pinout numbers way back when...
 
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Old Jan 26, 2012 | 08:44 AM
  #50  
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Do you really need a double throw relay for headlites, especially since one relay is used for just low beam and one high beam ?
 
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Old Jan 26, 2012 | 08:50 AM
  #51  
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No, but that is the most common relay available.
I was pointing that out...
Originally Posted by ArdWrknTrk
I see in that writeup he mentions two #87 terminals.
Don't make the mistake of confusing 87 & 87A (which is NC, and open when the relay is energized)
The pinouts are similar, but NOT the same.
 
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Old Jan 26, 2012 | 02:55 PM
  #52  
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Originally Posted by TexasGuy001
Something else to top off the relays, I like GE Nighthawk (not sport), Sylvania Xtravision (easily found at most stores), Phillips Xtreme Power or Vision Plus. These are all clear bulbs with different filiments and gas mixture. They are a little brighter. They are a tad brighter than regular bulbs. Just don't buy any blue coated bulbs, this includes Silverstar and all that stuff called hyper white etc. Those actually reduce the amount of usable light slightly, since the more yellow light is filtered out.
I have just "burned" through a set of the Nighthawks ($40/pr retail, ouch) in 13 months, and both bulbs burnt out within a week of each other.

If you go online and research all of these type of "performance" bulbs, you will find that there is one universal complaint: bulb life. In some cases it can be 75% lower than standard halogen bulbs (ie 200 hour bulb life vs. 800-1000).

It's an individual decision whether the additional brightness (and significantly higher cost) is worth the tradeoff of the much shorter life.
 
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Old Jan 26, 2012 | 03:30 PM
  #53  
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Originally Posted by redmondjp
I have just "burned" through a set of the Nighthawks ($40/<acronym title="Page Ranking">pr</acronym> retail, ouch) in 13 months, and both bulbs burnt out within a week of each other.

If you go online and research all of these type of "performance" bulbs, you will find that there is one universal complaint: bulb life. In some cases it can be 75% lower than standard halogen bulbs (ie 200 hour bulb life vs. 800-1000).

It's an individual decision whether the additional brightness (and significantly higher cost) is worth the tradeoff of the much shorter life.
Your right. They generally do not last as long as the regular bulbs. I have not really had any issues with the Xtravision from Sylvania. The GE Nighthawks I have had were not really like that either. I'm referring to the regular Nighthawk +30%, not the newer platinum ones.

I don't know what the rated hours is on the Xtravision or regular Nighthawk. The XV's are cheap though, so its not a big deal.

The blue coated bulbs really do have much shorter life spans. The coating absorbs heat.
 
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