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#1 |
Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Headlights
I recently wired up two 30amp relays for my Hi/Low beams.
Before the relays I was running sylvania xtravision in the low-beams. They functioned perfect. I recently went to switch back to my sylvania Silverstars. ( they are noticably brighter) When I run the silver stars I have to re-wire the pin connector to get the lo-beams to work, then When I switch over to high beams I lose a low-beam ? VisaVersa When I wire it to the way the xtravisions where I get a little glow in high beams when Just the lows are on. I must have a bad ground somewhere.... I want to just re-wire the whole headlight circuit from the firewall out. Using the old Low/Hi wires for the relays switched power. My plan is to run two inline 30amp fuses to two 30amp relays. One for hi, one for low like Im currently running. Do I Need to run two relays for Each light ? Totaling 4 ? 2 high 2 low ? Im going to run all 12awg wire and solder and shrinkwrap all my connections too. I just recently wired up a electric fan using all 12awg and solder connections. Turned out very nice. Thanks for any help guys, I want to get my headlights dialed soon. The relays made a big difference already. Now I just want the wiring to the lights to be overkill ![]() ![]()
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---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... |
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#2 |
Registered User
Join Date: Jan 2009
Location: Bryan,Texas
Posts: 132
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Re: Headlights
this is the way im gonna do mine when i get other bugs worked out.
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#3 | |
Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: Headlights
Two relays is all you need. If you can find them they make realys with dual 87 terminals http://www.suvlights.com/product_inf...roducts_id=119 that way you can feed each light from it's own terminal. I like to wire my relays with the 85 terminal as the ground because some have diode across the 85 and 86 terminals.
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
Last edited by fixit-p; 08-25-2009 at 06:59 PM. |
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#4 |
Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Re: Headlights
Thats good info. I wasnt aware of a dual 87 terminal relays like that.
Im wondering If I should go 85 ground, That could possibly be where im getting power bleeding through ? Would you then run 86 for the switched source ? Im also having a hard time finding 12awg lead relay plugs, I can find 14awg leads all day. Im going to mess with it some more tonight and post back....
__________________
---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... |
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#5 | |
Registered User
Join Date: Dec 2008
Location: Yay Area CA
Posts: 2,329
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Re: Headlights
Swaping the 85 and 86 terminals wont cause the issue you described, I do it because (I'm anal about it) and if you plug in a relay that has a diode across 85 and 86 you'll short straight to ground and fry the relay. I use the relays with diode's because when the field suddenly collapses on the relay you get a voltage spike that can damage sensitive equipment.
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1965 GMC shortwide big window 1969 Chevy C20 long (for now) 2005 Silverado 2500HD Crew Cab Quote:
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#6 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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Re: Headlights
The way I do it is:
85 - ground 86 - switched source from the headlight switch 87 - out to headlights 30 - 12v in
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#7 |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,503
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Re: Headlights
Thanks for posting the drawing and info Travo77 and Glock35ipsc I need to do just that on my 71 as I have lights with H-4 bulbs that tend to be hard on dimmer switches.
That may be on today's list of projects. |
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#8 |
Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Re: Headlights
Thanks for the info guys, Im going to gather up the material and try and tackle this over the weekend.
I will keep this post updated
__________________
---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... |
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#9 |
Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Re: Headlights
Ok so I had to drive my truck tonight for about 30 miles in Pitch darkness....Me my truck and my lights....
And I have came to a conclusion, Ole' Blue Needs a H4 Euro code conversion. I remember Hella making some Non DOT approved lenses that where Euro code ? I want to go E code Hella lenses with a H4 bulb on the top lights. The high beams would still have to remain sealed beams ?? Or could I convert them over too ? I realize this could get expensive and lead to HIDS ![]() ![]() But I love some good lights, It must be a Surefire thing. ( If you own one you know what I mean ![]() Nothing beats pure focused light with no shadows... Every time a Benz or BMW passes me on the freeway at night I get jealous ![]() ![]() ![]() Anyone have any good suggestions for a H4 conversion, and Not the ones in LMC. I don't really care for the look of the Len's. Thanks
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---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... Last edited by hessian18; 08-27-2009 at 01:25 AM. |
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#10 |
Gen III Power
Join Date: Sep 2007
Location: Hesperia CA
Posts: 318
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Re: Headlights
Any input ?
So far from the searching I have done, Hella 165mm lenses are what I will need, along with a set of H4 PIAA drivers and a set of H7 PIAA drivers. H4's for the high/low and he H7 for high beams. All wired up with 12awg wire and 30amp relays.. If I get this started I will keep posted ![]()
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---Bob--- '81 Long Box. 2005 5.3l Vortec and 2005 4L80e coming soon... |
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