HD Headlight Harnesses w/ 4 High Mod

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5vortec7

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@5vortec7, does this plug into the factory plug near the firewall? I’m having to replace my factory light harness since it was damaged with the body damage. I was wondering if I’d still have to source a factory harness if I went this route.
Unfortunately no, it plugs into the drivers side stock headlight connectors.
 

351FUN

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What does this upgrade? Is it thicker wire or are we just getting the 4 hi mod?
 

AK49BWL

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Aww yeah, park lights and headlights through an in-built circuit breaker in the headlight switch, all the way up to the end of the GMT400 lineup at least.
 

5vortec7

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@351FUN Just shoot me a message when you’re ready, you’ll be impressed with the brighter low beams as well as the 4 high output.

As for your electrical gremlins, have you checked the condition of all your major ground cables and straps? Bad grounds can cause all sorts of various issues. Make sure to inspect under the insulation too for any corrosion or discoloring. If you find some I also make cable upgrade kits for single and dual battery systems.

https://www.gmt400.com/threads/big-3-and-dual-battery-kits.41818/
 
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