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Old 11-03-2008, 11:20 PM   #1
lytemup454
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head light relay mod

Hey Guy's I'm doing the headlight relay mod and I can't find any info on what to do with the 5th prong. All the write up's I can find is about four prong relays. Thanks In Advance
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Old 11-03-2008, 11:32 PM   #2
Sport/Truck
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Re: head light relay mod

I don't think you'll need it.
http://www.rattlebars.com/avalanche/relay_basics.html

s/t
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Old 11-03-2008, 11:37 PM   #3
hchad18
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Re: head light relay mod

Usually the NC (Normally closed) side of the relay. Circuit opens when relay is energized. I cant see why it would be used.
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Old 11-03-2008, 11:45 PM   #4
lytemup454
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Re: head light relay mod

sweet Thats what i needed to know thanks alot!!!!!
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Old 11-04-2008, 04:17 AM   #5
Rollie396
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Re: head light relay mod

You're gonna like the difference.Definitely big bang to buck value.
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Old 11-04-2008, 09:00 AM   #6
8mpg
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Re: head light relay mod

you dont need the 5th prong. Those relays typically work like:

30 - constant power from battery
85 - ground
86 - trigger wire
87 - power wire to accessory when trigger wire is +
87a - power wire to accessory when trigger wire is -
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