Headlight relay install You Gatta do it. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

matt67350 · 09-17-2005, 02:57 AM

Just finished installing a relay in the high and low beam lights, on a 69 lwb.

If you have not done this install, you should. This is the second truck I've done.

Cost is about $25.00-$40.00 depending how much wire, relays and split loom
you want to replace. This mod will payoff rightaway.

Bright light,
Matthew

raidermanny · 09-17-2005, 03:13 AM

what exactly does this do

*aquik72gmc350* · 09-17-2005, 03:51 AM

It makes your headlites alot brighter.

4x4Poet · 09-17-2005, 05:00 AM

Here ya go:
http://www.madelectrical.com/electri...adlights.shtml

Quote:

Originally Posted by raidermanny

what exactly does this do

One of the best mods for nightime visibility and safety. Also upgrade to high quality halogen or better headlights and you'll never hit a deer on a pitch black night. Or a pedestrian (unless on purpose

).

rambler · 09-21-2005, 04:40 PM

Quote:

Originally Posted by 4x4Poet

One of the best mods for nightime visibility and safety. Also upgrade to high quality halogen or better headlights and you'll never hit a deer on a pitch black night. Or a pedestrian (unless on purpose

).

I've already hit a deer,

so I'm gonna do this one,, Once I get the headlights back on...

mrein3 · 09-17-2005, 09:54 AM

Quote:

Originally Posted by raidermanny

what exactly does this do

Your factory truck headlight wiring sucks. You have 12 volts running from the battery, to the switch on the dash board, back to the headlights RIGHT NEXT TO THE BATTERY!

The wires are too small, the length is to great, the result is less than 11 volts at your headlights.

And all that missing current has to go somewhere. Where it goes is it turns into heat which wears out your $8.00, pain in the a$$ to change headlight switch!

What you do is turn your headlight switch into a relay controller. Use 8 or 10 gauge wire from the battery through the relay to the headlights. The result is 12+ volts at the headlights. The first night you run with these you'll wonder why you waited so long to make the swap.

You'll also wonder why people are buying those $40 each headlight "upgrades".

cdowns · 09-17-2005, 10:53 AM

works on the backend too

*FormerMember* · 09-17-2005, 11:24 AM

Also, 17.50 if you want to go the Summit route:

http://store.summitracing.com/partde...sp?part=108995

**tnblazerk5** · 09-17-2005, 05:35 AM

Quote:

Originally Posted by matt67350

Just finished installing a relay in the high and low beam lights, on a 69 lwb.

If you have not done this install, you should. This is the second truck I've done.

Cost is about $25.00-$40.00 depending how much wire, relays and split loom
you want to replace. This mod will payoff rightaway.

Bright light,
Matthew

its on my list of things to do to the truck

67chevemall · 09-17-2005, 11:52 AM

ya its on my list too! I want to do alot of rewiring I should just do iteh.
The summit one looks good..

70c10 · 09-17-2005, 11:53 AM

I was planning on buying one the headlight upgrade kits and didn't realize I would be frying the headlight switch over the long term!. I will look into that kit from Summitt.

KEH · 09-17-2005, 11:31 PM

Has anyone used that summit kit? Just wondering if the wire lengthes and all are good?

**hilljob26** · 09-17-2005, 11:40 PM

anyway you can make a wiring diagram for us,i have a couple extra relays and would like to run them the way you did

mikesgmc68 · 09-17-2005, 11:46 PM

See here everyone talking about the headlights. I am handy, but when it comes to wiring, i have to left hands. I think this may be my problem. I put a new high/low switch in as well as a new h/lamp switch. I have dash lights, tail lights, directionals and brake lights but no h/lamps either high/low beam. Any info on what I am facing here would be great. Thanks to all for any input.

71swb4x4 · 09-17-2005, 11:51 PM

I have done it, can't believe anyone with a daily driver that sees night driving wouldn't do it. It makes night time driving 10 times better. One of the cheapest bangs for your buck.

Russell · 09-18-2005, 12:25 AM

Man, with all this talk, its looking like my headlight system is getting a second and third relay, lol (I've got it rigged up so the headlights are on when my heater fan is on, that turns them off when you are cranking, but on the rest of the time)

My lights were good before, I'm excited to see how they'll be after I do this little upgrade! I never even thought about doing so before

I think these will be relays number 20 and 21 or so on my truck, lol

*aquik72gmc350* · 09-18-2005, 01:08 AM

Chevy is the first, and GMC is the second.

vtblazer · 09-18-2005, 07:40 AM

Good tip/info, thanks.

Appreciate the link.

Just ordered the Summit kit.

nitor · 09-18-2005, 08:06 AM

This is on my list.

LUV2XCLR8 · 09-18-2005, 10:25 AM

Quote:

Originally Posted by aquik72gmc350

Chevy is the first, and GMC is the second.

Nice job

70GMCer · 09-18-2005, 08:27 AM

also at JEGS......... http://www.jegs.com/cgi-bin/ncommerc...10&prmenbr=361

Sweet72 · 09-18-2005, 08:38 AM

The GMC schematic has only one 20a fuse feeding 4 headlights. For better circuit protection use two on the feed wires like the Chevy.

1972ChevyCheyenne · 09-18-2005, 08:51 AM

What relay would be good for this? Anyone have a part number?

Jamie

*FormerMember* · 09-18-2005, 09:01 AM

I've done it on several trucks.
(the summit one)

Lengths are perfect, in fact, too long. I usually cut 'em down.

A bosch relay, in 20 amps is perfect for DIY.

67chevemall · 09-18-2005, 09:25 AM

Jegs kit looks like it comes with better bulbs too? You don't have to change the
bulbs too do you?

09-17-2005, 02:57 AM	#1
matt67350 Registered User Join Date: May 2001 Location: Benbrook, TX Posts: 1,060	Headlight relay install You Gotta do it. Just finished installing a relay in the high and low beam lights, on a 69 lwb. If you have not done this install, you should. This is the second truck I've done. Cost is about $25.00-$40.00 depending how much wire, relays and split loom you want to replace. This mod will payoff rightaway. Bright light, Matthew Last edited by matt67350; 09-17-2005 at 04:18 AM.

09-17-2005, 10:53 AM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	works on the backend too __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-17-2005, 11:53 AM	#11
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,857	I was planning on buying one the headlight upgrade kits and didn't realize I would be frying the headlight switch over the long term!. I will look into that kit from Summitt. __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

09-17-2005, 11:31 PM	#12
KEH Better late than never Join Date: Dec 2001 Location: Columbus, IN Posts: 324	Has anyone used that summit kit? Just wondering if the wire lengthes and all are good? __________________ 1970 C/10 SWB Stepside

09-17-2005, 11:40 PM	#13
hilljob26 Registered User Join Date: Dec 2004 Location: Gypsum Kansas 67448 Posts: 1,681	anyway you can make a wiring diagram for us,i have a couple extra relays and would like to run them the way you did __________________ 21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343

09-17-2005, 03:13 AM	#2
raidermanny Senior Member Join Date: Dec 2004 Location: Fremont, Ca Posts: 260	what exactly does this do

09-17-2005, 03:51 AM	#3
aquik72gmc350 Account Suspended Join Date: Aug 2005 Location: Ca Posts: 81	It makes your headlites alot brighter.

09-17-2005, 11:24 AM	#8
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	Also, 17.50 if you want to go the Summit route: http://store.summitracing.com/partde...sp?part=108995

09-17-2005, 11:52 AM	#10
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	ya its on my list too! I want to do alot of rewiring I should just do iteh. The summit one looks good..

09-17-2005, 11:46 PM	#14
mikesgmc68 Registered User Join Date: Jul 2005 Location: Oak Creek, WI Posts: 29	no headleads See here everyone talking about the headlights. I am handy, but when it comes to wiring, i have to left hands. I think this may be my problem. I put a new high/low switch in as well as a new h/lamp switch. I have dash lights, tail lights, directionals and brake lights but no h/lamps either high/low beam. Any info on what I am facing here would be great. Thanks to all for any input.

09-17-2005, 11:51 PM	#15
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	I have done it, can't believe anyone with a daily driver that sees night driving wouldn't do it. It makes night time driving 10 times better. One of the cheapest bangs for your buck. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

09-18-2005, 12:25 AM	#16
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Man, with all this talk, its looking like my headlight system is getting a second and third relay, lol (I've got it rigged up so the headlights are on when my heater fan is on, that turns them off when you are cranking, but on the rest of the time) My lights were good before, I'm excited to see how they'll be after I do this little upgrade! I never even thought about doing so before I think these will be relays number 20 and 21 or so on my truck, lol __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) Last edited by Russell; 09-18-2005 at 12:27 AM.

09-18-2005, 01:08 AM	#17
aquik72gmc350 Account Suspended Join Date: Aug 2005 Location: Ca Posts: 81	Chevy is the first, and GMC is the second. Attached Images Last edited by aquik72gmc350; 09-18-2005 at 03:23 PM.

09-18-2005, 07:40 AM	#18
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,538	Good tip/info, thanks. Appreciate the link. Just ordered the Summit kit.

09-18-2005, 08:06 AM	#19
nitor Too many projects Join Date: Aug 2002 Location: Morrow, OH Posts: 344	This is on my list. __________________ Jim '55 Chevrolet Pickup '56 Chevrolet Belair '04 Chevrolet Astro '95 Chevrolet Blazer



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09-18-2005, 08:27 AM	#21
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	also at JEGS......... http://www.jegs.com/cgi-bin/ncommerc...10&prmenbr=361 __________________ 1997 GMC Sierra Ext 1965 Mustang

09-18-2005, 08:38 AM	#22
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	The GMC schematic has only one 20a fuse feeding 4 headlights. For better circuit protection use two on the feed wires like the Chevy. __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.

09-18-2005, 08:51 AM	#23
1972ChevyCheyenne Registered User Join Date: Sep 2004 Location: Teeswater, Ontario, Canada Posts: 173	What relay would be good for this? Anyone have a part number? Jamie

09-18-2005, 09:01 AM	#24
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	I've done it on several trucks. (the summit one) Lengths are perfect, in fact, too long. I usually cut 'em down. A bosch relay, in 20 amps is perfect for DIY.

09-18-2005, 09:25 AM	#25
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Jegs kit looks like it comes with better bulbs too? You don't have to change the bulbs too do you?

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