Quad Headlights

[sahls01gmc]

I have an 01 GMC, and I want to do the quad headlight mod. From what I have searched, it the links on here work for 03-07 trucks.

 

Does anyone know if the process is the same with the diodes? Or have you done it?

 

 

 

 

James

[8.1HD/ALLISON]

Should be the same.

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For the 99-02 models you just ground the yellow wires on the low beams.

[sahls01gmc]

For the 99-02 models you just ground the yellow wires on the low beams.

 

What is the best route to do that? Any issues to worry about with heat, or the wiring itself?

 

Thanks for the quick responses.

 

 

James

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I just used a t-tap and a piece of wire and a grounding terminal and grounded it to a bolt behind the light, never had a problem, heat will be less of an issue since the light is getting a direct ground now.

[sahls01gmc]

I just used a t-tap and a piece of wire and a grounding terminal and grounded it to a bolt behind the light, never had a problem, heat will be less of an issue since the light is getting a direct ground now.

 

Hmmmm, will this make them be on all the time? I have the automatic sensor on the dash, and I only want the lights to be on at night when needed, and then of course stay on with the brights. How is that a different ground causes the lights to stay on? Does the high beams cut the ground on the low beams entirely to turn them off normally?

 

 

James

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No, they won't stay on all the time, they'll only stay on when the headlights are on whether the brights are on or not. And yes, that's how the system works on these 99-02, it swaps grounds(between the hi and lo) when you hit high.

[sahls01gmc]

Ah, perfect! You took all my concerns away. Off to the parts store I go!!!!

 

Thanks!

 

 

 

James

[bc_gavin]

Anyone know how to do it to a 2010

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2007+ does it factory.

[bc_gavin]

2007+ does it factory.

 

what do you mean factory?

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I mean it already has quad headlights on high from the factory.

[Superperv23]

on an 07up the low beams stay on with the high beams so if you want them all on at once just turn your high beams on and be prepared to piss off a lot of people

[bc_gavin]

on an 07up the low beams stay on with the high beams so if you want them all on at once just turn your high beams on and be prepared to piss off a lot of people

 

 

Didn't know that Thanks!