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Anzo LED Light Install on ’03-’06 Chevrolet Pickups

Look Sharp: Anzo LED Lights Give Tired Trucks a Fresh Look

Sep 14, 2016
Photographers: Edward A. Sanchez
Few things betray a vehicle’s age as much as oxidized, peeling paint and yellowed, dulled headlights. While it’s possible to preserve the original paint through regular washing and periodic waxing and detailing, as the years go by, it’s hard to avoid the effects of the sun’s punishing ultraviolet (UV) rays on plastic headlight housings. Sure, there are plenty of products out there that can temporarily bring back the shine to dulled, yellowed headlights, but it’s just a temporary fix that will have to inevitably be repeated as the UV inhibitors wash away.
Automotive styling trends have come a long way in the last decade, but rather than having to go out and pay $40,000-plus for a brand-new truck, you can spend a few hundred and give your older truck a surprisingly fresh and contemporary look with some LED-accented headlight and taillight housings. We got new headlights and taillights from Anzo USA, one of the leading manufacturers of aftermarket replacement headlights and taillights. For this particular install, our subject was an ’04 Chevrolet Avalanche 1500. The front clip is essentially identical to that of the ’03-to-’06 Silverado. The taillights are a different design than the Silverado, but the installation process is essentially the same.
Photo 2/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Finished Product
We chose the “Eagle Eye” style for the Avalanche, which features a U-shaped LED light pipe surrounding the high- and low-beam headlamps, and matched it with a lower driving light/turn signal housing with an LED strip that alternates with the amber bulb, which sits behind it. New high- and low-beam headlight bulbs are included with the new lights. However, the other bulbs are not, and if you have an older truck, it’s a convenient time to install fresh bulbs to ensure optimal long-lasting performance. We got a full set of replacement bulbs—minus the headlamp bulbs—including the backup lights for around $20 total.
While we knew the Anzo lights would improve the looks of our 12-year-old truck, even we were surprised by how dramatic the transformation was. We’ve gotten lots of compliments on the looks, with several people saying it looks like a new truck. If your headlights are yellowed and fading but your truck is otherwise reliable, paid for, and has plenty of life left in it, consider upgrading the lights. The upper headlights go for around $350 at most online automotive retailers, the LED driving/signal lights run between $170 and $190 for a set, and the LED taillights go for around $250 a pair. This is a project that can easily be done on the weekend and should only take about an hour from start to finish.
Anzo offers replacement LED headlights and taillights for most popular late-model fullsize trucks, including ’88-and-newer Chevrolet C/K 1500/Silverado and GMC Sierra, ’92-and-newer Ford F-150 and Super Duty, and ’94-and-newer Dodge/Ram fullsize trucks.
Photo 3/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Finished
1. The headlights and driving lights on our ’04 Avalanche were dulled and yellowed. The new Anzo LED headlights and driving lights made for a dramatic improvement to the truck’s looks.
Photo 4/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Remove Radiator
2. To start, remove the radiator shroud and grille, which is fastened to the body by round, plastic tabs. Although you can buy replacement tabs, if you’re careful when removing them, you should be able to reuse them. Carefully remove them with a flathead screwdriver.
Photo 5/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Grille Tabs
3. The corners of the grille are secured by metal tabs. Once the top plastic tabs have been removed, the grille and shroud should come out easily.
Photo 6/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade L Shaped Pin
4. The upper headlight unit is secured by an L-shaped pin at the top. Simply turn the pin and slide it out.
Photo 7/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Wiring Harness
5. Remove the wiring harnesses that attach the wiring to the bulbs.
Photo 8/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Plastic Tab
6. The lower turn signal/driving lights are secured by a plastic tab. Again, only slight pressure on the tab should be needed to remove it.
Photo 9/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Eagle Eye
7. The “Eagle Eye” LED halos on the headlights receive power from the parking light circuit connected to the lower housing. The black wire is ground, and the brown wire is power. Splice black into black, and the blue wire into the brown wire.
Photo 10/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Crimp Connectors
8. Anzo includes crimp-style connectors to splice into the driving light circuit. For this install, we opted for shrink-tube-style connectors.
Photo 11/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Bulbs
9. New high-beam and low-beam bulbs are included in the Anzo upper headlight housing.
Photo 12/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Bulb Circuit
10. The signal/driving light unit is powered off of the small 194-bulb circuit in the corner. Remove the bulb. The amber signal bulb and main driving light bulbs will be reused. Now would be a good time to replace them if you haven’t recently.
Photo 13/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Plug In
11. Plug the new Anzo unit into the 194 circuit and feed the wire into the hole until it connects to the housing. Secure the new Anzo lower unit with the locating tabs. The back of the housing should be the same as the stock units, assuring easy installation.
Photo 14/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Screwdriver
12. Like the stock units, you can use a Phillips head screwdriver on the top aiming screw to adjust the headlight aim.
Photo 15/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Reinstall Radiator Shroud
13. Reinstall the radiator shroud and grille, reusing the factory plastic tabs. We’re done with the front.
Photo 16/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Taillights
14. The taillights are a lot more straightforward. The stock taillight housings are removed by unscrewing the two locating screws on the inboard side. Remove the screws, release the taillight, and remove the stock bulbs.
Photo 17/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Halogen
15. The top and middle bulbs will not be reused. The reverse light remains halogen and has the shortest harness and only two wires. Once again, now’s a good time to install new ones.
Photo 18/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Feed Excess Wiring Into Slot
16. The wiring harnesses on the Anzo unit coming out of the top and middle opening should plug in directly to the stock wiring harnesses. Push-fit until you feel a “click” and gently feed excess wiring into the housing. Since LEDs are much cooler than incandescents, there is little danger of overheating.
Photo 19/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Ballast Mount
17. Mount the LED ballast units inboard on the quarter panel. Make sure the surface is clean and clear of dust or grime. The mounting location won’t interfere with the housing. Remove the plastic protective backing from the double-stick foam tape and press the ballasts firmly against the clean surface.
Photo 20/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Secure
18. Connect the ballast units to the corresponding harness on the housing. Line up the Anzo taillight housing with the stock mounting position and secure with the two Phillips head screws.
Photo 21/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Finished Taillights
19. Although more subtle than the front lights, the LED taillights are no less impressive at night. The individual diodes give a high-end look and bright illumination.
Photo 22/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Finished Front View
Photo 23/23   |   2004 Chevrolet Avalanche Anzo Light Upgrade Finished Headlights
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Chino, CA 91710



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