Fog light upgrade light's

ROYCAR71

MEMBER
2011 CHEVROLET AVALANCHE
5.3L
6 CYL
2WD
AUTOMATIC
158,621 MILES

I'm upgrading to 5202 LED Fog Light Kit ironwall. The old halogen lights work, but when I replace with led lights they don't turn on. Do I need to upgrade relay in circuit?

Saturday, February 20th, 2021 AT 1:31 AM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,702 POSTS

Nope, they should work. you can check for power and ground using this guide with the fog light wiring diagrams below to show you how the system works:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what happens.

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Sunday, February 21st, 2021 AT 9:54 AM

ROYCAR71

MEMBER
354 POSTS

Quick note. The wiring and fog lights are after market I installed. It came with 30 amp relay and 15 amp fuse. This setup works fine with regular halogen bulbs. But new led lights with fan in back they won't. Is that a sign that it's not getting enough power?

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Monday, February 22nd, 2021 AT 3:34 AM

KEN L

MASTER CERTIFIED MECHANIC
47,702 POSTS

It could be. let's check using a voltmeter. this guide can help us figure out what's going on:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please run down this guide and report back.

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Thursday, February 25th, 2021 AT 8:02 AM