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taping into 2017 Silverado Headlight wires to power grill lights

Greg Crosby
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Greg Crosby New Member

Greg Crosby

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Looking to tap into the 2 of the 8 wires of the 2017 Chevy Silverado driver side headlight assembly to power the 3 lights in my  EAG grill. 

Would like the grill lights to be on when running lights are on.  Does anyone know which 2 wires by color code I should use?

Thanks

JimCost2014 Senior Enthusiast

JimCost2014

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4 hours ago, Greg Crosby said:

Looking to tap into the 2 of the 8 wires of the 2017 Chevy Silverado driver side headlight assembly to power the 3 lights in my  EAG grill. 

Would like the grill lights to be on when running lights are on.  Does anyone know which 2 wires by color code I should use?

Thanks

Welcome to the site.

 

Does EAG suggest which wires in their instructions? 

Greg Crosby New Member

Greg Crosby

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1 hour ago, silveradosid said:

brown should be the running lights positive and black is ground

I'm not seeing a brown wire within the 8 wire harness.   TX

lovecars Enthusiast

lovecars

Posted
Posted

Just thinking out loud.... Most wiring in the truck is somehow monitored through or by the computer. That's the reason you can't find the wires you want in the harness.

 

If you see any small thin wires they are computer network monitor wires, don't tap into them or you can possibly harm one of the computers.

You can tap into the the box under the steering wheel on the left side of the firewall, if you remove it there are open wires taps that can be used for your purpose as long as you use them to trigger a relay connected directly to the battery with at least a 10 amp fuse.

 

I went to hook up signal mirrors and found out that they needed to be hooked up to the under the steering wheel main body computer.

 

Go to https://www.gmupfitter.com/ and find the schematics for your truck, and there you will find out how to hook up accessories.

 

You have to get special connectors and a special crimper so you can insert the needed wires into the empty cavities of the BCM.

 

I can help but will not be responsible for any damage. or errors, you will have to follow the wires that you need to use and plug the in where they are needed.

 

Also you will need a copy if your option list because most diagrams are different depending on the option.

 

Or you can wing it but be very careful and test the wires for 12v if they are 3volts and the ohm meter needle or display can't catch up then those are network wires that work like the back of your cable modem where the ethernet wire is connected.

 

I forgot in some cases you have to install a diode to stop feedback into other circuits....

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