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TOPIC: Headlight Relay
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texasscott1 (User)
Two of a kind
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Posts: 1824
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Headlight Relay 4 Months ago
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Has anyone installed or though about installing a relay to turn the headlight off while the starter is engaged?
They make what's called a NC (normally closed) relay that could be installed in the headlight ground wire with the positive trigger wire going back to the starter side of the starter relay or even just down to the starter post. That way when the starter button is pushed the headlight would be turned off.
Some relays have 2 posts, one normally closed and the other normally open.
Might help with some slow crank situations, I don't know. The headlight only draws about 5 amps.
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My 99 Standard Test Mule
Scott B.
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Re:Headlight Relay 4 Months ago
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hey every amp counts. im probly close to double or tripple that cause my running lights stay on 24/7 and those have some brite ___ light in them too
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Re:Headlight Relay 4 Months ago
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texasscott1 wrote:
Has anyone installed or though about installing a relay to turn the headlight off while the starter is engaged?
They make what's called a NC (normally closed) relay that could be installed in the headlight ground wire with the positive trigger wire going back to the starter side of the starter relay or even just down to the starter post. That way when the starter button is pushed the headlight would be turned off.
Some relays have 2 posts, one normally closed and the other normally open.
Might help with some slow crank situations, I don't know. The headlight only draws about 5 amps.I believe the New Dyna3000 modules do it automagically.
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Re:Headlight Relay 4 Months ago
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If i had a headlight right now i could tell you. I just put one in 2 days ago, man what a pita that was.
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Re:Headlight Relay 4 Months ago
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texasscott1 wrote:
[quote]Has anyone installed or though about installing a relay to turn the headlight off while the starter is engaged?
quote]
My '06 Silverado turns off the headlight when you engage the starter. Its 100% stock.
I thought they all did that..... 
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Mike
`06 Roadstar Silverado
Lenoir City, Tn
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Re:Headlight Relay 4 Months ago
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MikelJay wrote:
[quote] texasscott1 wrote:
Has anyone installed or though about installing a relay to turn the headlight off while the starter is engaged?
quote]
My '06 Silverado turns off the headlight when you engage the starter. Its 100% stock.
I thought they all did that.....
my headlight on the 05 never shuts off maybe it was a change in 06, are the the only owner? anyone else have a headlight that shuts off during start up??
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Re:Headlight Relay 4 Months ago
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I think mine shuts off it's an 07. I ever really paid that much attention to it  |
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Last Edit: 2012/01/27 08:58 By davej.
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dave
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Re:Headlight Relay 4 Months ago
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Headlamp does not shut off while starting up my 2005 R*1700 with a Dyna 3000. maybe the stock brain does but do not remember.
Samson |
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scottw (User)
Platinum Boarder
Posts: 1608
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Re:Headlight Relay 4 Months ago
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texasscott1 wrote:
Has anyone installed or though about installing a relay to turn the headlight off while the starter is engaged?
They make what's called a NC (normally closed) relay that could be installed in the headlight ground wire with the positive trigger wire going back to the starter side of the starter relay or even just down to the starter post. That way when the starter button is pushed the headlight would be turned off.
Some relays have 2 posts, one normally closed and the other normally open.
Might help with some slow crank situations, I don't know. The headlight only draws about 5 amps.
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Great idea esp in cases where battery power for starting the R* is marginal like older R* with lower output stator thats also running a stock 270cca battery & stock std trq starter (could help in colder temps too!).
Never know,it could maybe be the difference between getting it fired up or not at times & could never hurt to do the mod,thats for sure.
Could do it the old fasion way like hooking a fused toggle SW in hot wire to headlight that you can turn off /make it go open when you need max battery current to the starter.
But installing a relay inbetween starter circut & hot 12v to headlight like TexasScott suggested is the better/really right way to do it.
Scott
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Last Edit: 2012/01/27 17:50 By scottw.
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scottw (User)
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Posts: 1608
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Re:Headlight Relay 4 Months ago
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davej wrote:
I think mine shuts off it's an 07. I ever really paid that much attention to it
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I'm not sure about my 06 either,i will try to remember to chk it out when i fire it up in spring time to see if headlamp temporarily shuts down when starter is canking the motor.
Scott
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