1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Introducing our brand new Heavy Duty Headlight Harness specifically designed for the 73-87 Chevrolet & GMC trucks with SINGLE headlights. Our HD Headlight Harness's are the top of the line, and are constructed with quality materials. They are 100% "Plug n' Play" so there is no need to cut or splice any wires what so ever. They feature HD Ceramic H4 Headlight plugs, to ensure a long life and can handle very high wattage bulbs. The harness will work with any single headlight set up that utilizes a H4 style plug (eg. Sealed beam, Halogen, HID). With this harness installed, it will draw your power for your headlights directly from the battery (taking all the load off of your OE Headlight switch) and give your headlight the full 13.8V+ they need to run at 100% and give you a very large upgrade in light output!

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Below are a few of the benefits of upgrading your headlight Harness:

• Takes all the load off of your OEM headlight Switch
• Delivers the full 13.8V+ to your headlights to allow them to run at 100%
• Increases headlight output to allow for a safer night driving experience
• Constructed of marine grade 12awg wire
• Every connection is cleanly soldered and heat shrunk to ensure a long trouble free life
• H4 Ceramic Headlight Plugs
• Made in the United States of America
• HD 30/40 Amp Relays
• Neatly loomed with heat resistant black loom for a clean pro installation
• Plugs right into your OEM headlight Harness
• Comes with complete application specific install directions

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Price: $89.95

Shipping: $9.95 via USPS Priority Mail to the lower 48 States ONLY
Shipping to Canada: $15.99 via USPS

Payment: PayPal or a US Postal Money Order

To Order: Simply send us a PM with your PayPal address and we'll send you an invoice with a total via PayPal

Part Number: 7387SHD312


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Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Bump!

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

do you have any plans to make the same part available for the quad headlamp/dual headlamp trucks?

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Yes! We are currently developing the Heavy Duty Headlight harness for the squarebodys with dual headlamps! There will be a pre-sale thread up within the next week, if you would like I can add you to the list of people to be notified when the harness is released!

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Yes, please do add me to that list. Thanks!

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Its a NICE harness guys...I got one for my 75 and the quality if the assembly is top notch.

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

pm sent

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

I'd also like to get on the list for the dual headlight harness

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

I'd also like to get on the dual head light harness as long as it is will work with the 88-91 head lamps. I'm guessing it will, but figured I'd ask.

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Hi,
I send you a PM shortly with more details.
Thanks

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Installed mine today. No issues what so ever, done in about an hour. to be honest, the HD headlights I think cost more than the harness. Look into it if you want better headlights on your truck.

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Actually might be interested in buying a couple more kits to drop in (get this) a 1965 Fairlane and a 1962 Thunderbird. Both have dual headlight setups. The headlight switches on these cars struggle with higher capacity headlights. I can't imagine that the system would be any different functionally for a Ford vs. a Chevy. If they work I might just get you some business from some of the Fairlane and T-bird owners as well as the guys here. More $$$ for you.

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

PM Sent!

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

I am very interested in the dual headlight setup when available for my 87 pickup.

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Any word on the dual headlight setup? i seen its been over a month since the last time asked, just wondering on latest info. would be very interested in purchasing one.
Thank You

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Yes the dual headlight harness's are now available, below is a link to the pre-order sale thread!

http://67-72chevytrucks.com/vboard/s...d.php?t=522485

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

First off thank you very much to all who have purchased!

We are currently running a sale on this harness guys! We are offering a 10% off promotion currently, order now and save!

http://67-72chevytrucks.com/vboard/s...d.php?t=535240

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

PM Sent
Posted via Mobile Device

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

PM Replied! :chevy:

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

I have a GMC 35 Sierra Classic 1 Ton Dually. Is this a true *plug & play* or do wired have to be spliced? Thanks.

Regards
Larry

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Hi Larry,

Yes, this harness is a TRUE 100% Plug n' Play! You do not need to cut or splice any wire what so ever! You simply plug your passenger side OEM headlight connector into the new female H4 headlight connector on the new HD Headlight Harness.

Then you simply plug the new ceramic H4 headlight connectors onto your head lights, then bolt the 2 new power wire 3/8" ring terminals to your positive battery terminal, and ground the two #10 eyelets on the immediate left and right of the relay bank.

And your done! Installation is very straight forward on all of our harness's and allows for the cleanest and easiest installation possible!

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

I'm interested in a heavy duty H-4 harness for a 65 GMC with quad lamps is something available for it thanx...Vernski:lol:

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Replied to your PM Vernski!

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Don't suppose these will work if the battery has been moved to the DS during an engine swap, correct?

Re: 1973-1987 Chevy & GMC Heavy Duty Headlight Relay Harness's
 

Hi Don. Yes, this harness will still work even if you have the battery relocated to the driver side of the engine compartment. If you have any other questions, please feel free to ask!