headlight relays - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smokekiki · 05-13-2004, 11:35 AM

l can't find the post about wiring in relays to make the headlights work better.Can anybody help me out?

67chevemall · 05-13-2004, 12:04 PM

http://www.madelectrical.com/electri...adlights.shtml

This MAD site is great!

my new 72 · 05-13-2004, 12:34 PM

The only problem with that site is that they want you to buy their relays and kits with their instructions. They do not really tell you how to do it. There are a few on the board that have done this upgrade that will be more than happy to share the knowledge these guys want you to pay for.

smokekiki · 05-13-2004, 12:44 PM

my new 72,thats what I am looking for.I couldn't find it doing a search.I think the price madelectric wants is pretty high considering relays are $5-10 a piece.

UP GRADE · 05-13-2004, 12:55 PM

hey you are look for djracer he has all the details and the relays.

72 CustomCamper · 05-13-2004, 12:59 PM

Here is a wirind diagram that I have...

Chuck

72 CustomCamper · 05-13-2004, 01:03 PM

Hmmmm.. I'll try it again...

Keeps saying file's too big. I don't see how because I got it off the board...

Chuck

67chevemall · 05-13-2004, 01:12 PM

I just use their awsome work and go to Radio Shack for parts!

BobbyK · 05-13-2004, 01:18 PM

Here it is.
I did this mod and it sure makes a difference.

Can't blame MAD for not showing the actual diagrams.Afterall he is in business selling that kind of info.Not as if you can't get it off the web anyways

67chevemall · 05-13-2004, 01:24 PM

Good Work! Thats a great pic!

O/T But Hey!
Where would you run the electric fan relay from the Batt. Also?

BobbyK · 05-13-2004, 01:32 PM

Here's how my relays look all hooked up.
Looks a little confuseing but it goes like this.
Left to right:
1st relay
-brown wire=orig. low beam feed.
-Thick red is new 12 gauge wire going to low side of headlight.
-black=ground
blue (in rear of relay)=power feed from distribution block(blue wire is a 16g fusable link)

2nd relay
-all connections are the same as the 1st relay except the large green wire which feeds the high beam side of the light.
-the small green wires are the orig. high beam feed wires.

3rd relay
That's a relay with a built in Blade type fuse for a set of 55wt Hella driving lights.

and lastly is a 2nd power distribution block that is fed from a primary power distribution block I have mounted on the firewall.

BobbyK · 05-13-2004, 01:35 PM

I mounted mine to the fan shroud itself.

67chevemall · 05-13-2004, 01:40 PM

Sweet Fans what are they?
Where did you get em?

Cheers

smokekiki · 05-13-2004, 01:40 PM

Thanks alot!Thats what I was looking for.Mike

BobbyK · 05-13-2004, 01:45 PM

They are PermaCool 14" electric fans.Got them from Summit for about $80 each.

Made the aluminium shroud myself.

67chevemall · 05-13-2004, 01:48 PM

Very nice! I wish I was all done!

neonlarry · 05-13-2004, 02:46 PM

Here is another old board post
about headlight relays. Also link to low prices on relays.

05-13-2004, 11:35 AM	#1
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,474	headlight relays l can't find the post about wiring in relays to make the headlights work better.Can anybody help me out? __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

05-13-2004, 12:04 PM	#2
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	http://www.madelectrical.com/electri...adlights.shtml This MAD site is great! __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

05-13-2004, 12:34 PM	#3
my new 72 faster, faster, faster Join Date: Dec 2001 Location: Houston ,Texas ,USA Posts: 1,354	The only problem with that site is that they want you to buy their relays and kits with their instructions. They do not really tell you how to do it. There are a few on the board that have done this upgrade that will be more than happy to share the knowledge these guys want you to pay for. __________________ I'm going to Law School, wanna debate? It's good practice.

05-13-2004, 12:44 PM	#4
smokekiki Mike Join Date: Jan 2003 Location: west chester pa Posts: 2,474	my new 72,thats what I am looking for.I couldn't find it doing a search.I think the price madelectric wants is pretty high considering relays are $5-10 a piece. __________________ 70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires

05-13-2004, 12:59 PM	#6
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Here is a wirind diagram that I have... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

05-13-2004, 12:55 PM	#5
UP GRADE one set closer Join Date: Jul 2003 Location: Memphis TN. Posts: 722	hey you are look for djracer he has all the details and the relays.

05-13-2004, 01:03 PM	#7
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Hmmmm.. I'll try it again... Keeps saying file's too big. I don't see how because I got it off the board... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

05-13-2004, 01:12 PM	#8
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	I just use their awsome work and go to Radio Shack for parts! __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

05-13-2004, 01:18 PM	#9
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	Here it is. I did this mod and it sure makes a difference. Can't blame MAD for not showing the actual diagrams.Afterall he is in business selling that kind of info.Not as if you can't get it off the web anyways __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

05-13-2004, 01:24 PM	#10
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Good Work! Thats a great pic! O/T But Hey! Where would you run the electric fan relay from the Batt. Also? __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

05-13-2004, 01:32 PM	#11
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	Here's how my relays look all hooked up. Looks a little confuseing but it goes like this. Left to right: 1st relay -brown wire=orig. low beam feed. -Thick red is new 12 gauge wire going to low side of headlight. -black=ground blue (in rear of relay)=power feed from distribution block(blue wire is a 16g fusable link) 2nd relay -all connections are the same as the 1st relay except the large green wire which feeds the high beam side of the light. -the small green wires are the orig. high beam feed wires. 3rd relay That's a relay with a built in Blade type fuse for a set of 55wt Hella driving lights. and lastly is a 2nd power distribution block that is fed from a primary power distribution block I have mounted on the firewall. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

05-13-2004, 01:35 PM	#12
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	I mounted mine to the fan shroud itself. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

05-13-2004, 01:40 PM	#13
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Sweet Fans what are they? Where did you get em? Cheers __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

05-13-2004, 01:45 PM	#15
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	They are PermaCool 14" electric fans.Got them from Summit for about $80 each. Made the aluminium shroud myself. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

05-13-2004, 01:48 PM	#16
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Very nice! I wish I was all done! __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD



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05-13-2004, 02:46 PM	#17
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,746	Here is another old board post about headlight relays. Also link to low prices on relays. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

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