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OEM Off-Road Light Switch Install

TinkeringFox

By TinkeringFox
in Modifications & Accessories

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TinkeringFox
TinkeringFox

Have you seen the Michael J Fox Edition Sierra/Silverado rolling down the road? Looks like the Toyota from Back to the Future. Anyway there is a really cool headlight switch with the option for Off-Ro

pgamboa
pgamboa

For you guys with 2014/2015 or anyone else that this doesn’t work for (due to BCMs not being programmed to output these triggers), please be patient with us. We have an alternate method that allows

pgamboa
pgamboa

Ok folks, for anyone wanting this headlight switch harness, I have them ready made, and ready to ship.   $35 shipped anywhere in the US.   They are built with the same specs as shown in the vide

Posted Images

Lupillo13 Enthusiast

Lupillo13

Posted
Posted
On 1/30/2024 at 7:40 PM, Homewrecker007 said:

Ok, so this is for anyone who has a 14-15 truck that still wants to do the OEM headlight switch with the Off-road button. Or if you want on/off without delay for the 16-18. I found that the Amazon latching relays were unreliable in functionality. This way works perfectly every time. I'm not a 100% sure but for the folks that have a 16-18 truck you might be able to run the grey wire to bcm and to the relays and still get the dash icon light to come on. I will test this when I wire up my 18 in the future.  

Screenshot_20240129_172016_Gallery.jpg

20240129_201918.jpg

20240129_134650.jpg

20240130_113918.jpg

20240130_114017.jpg

Hey bro so I tried the relay setup and CAN'T get it to work don't know what i am doing wrong... Om the relay diagram you have the yello wire connected to 12v output there is no power. And on the wire where the gray wire connects to relay it has power always. I checked my connections with the diagram. So not sure what the issue. Can you help?

Buckwild27 Enthusiast

Buckwild27

Posted
Posted
23 hours ago, Lupillo13 said:

Hey bro so I tried the relay setup and CAN'T get it to work don't know what i am doing wrong... Om the relay diagram you have the yello wire connected to 12v output there is no power. And on the wire where the gray wire connects to relay it has power always. I checked my connections with the diagram. So not sure what the issue. Can you help?

Did you hook to the bcm at all? If so it could be causing the issue. Can you send me some pictures of the wiring on the relays? 

  • 4 months later...
ashkanani Enthusiast

ashkanani

Posted
Posted

Hi all

 

I'm new in this forum & I hope U can help me with my problem please .

I have 15 Sierra all terrain , I did purchased both of the off road switch & the harness from Dr. harness site , also I did the instillation , but the LED bar light didn't work also there are no indicator in the cluster .

do any one know whats wrong & any solution ? 

Buckwild27 Enthusiast

Buckwild27

Posted
Posted (edited)
8 hours ago, ashkanani said:

Hi all

 

I'm new in this forum & I hope U can help me with my problem please .

I have 15 Sierra all terrain , I did purchased both of the off road switch & the harness from Dr. harness site , also I did the instillation , but the LED bar light didn't work also there are no indicator in the cluster .

do any one know whats wrong & any solution ? 

The 14-15 trucks don't have the bcm programming for the dash indicator. And you will have to make a latching relay like I made here in this post. And not hook wires to the bcm.  

https://www.gm-trucks.com/forums/topic/214990-oem-off-road-light-switch-install/?do=findComment&comment=2650532

Edited by Homewrecker007
  • Like 1
ashkanani Enthusiast

ashkanani

Posted
Posted
37 minutes ago, Homewrecker007 said:

The 14-15 trucks don't have the bcm programming for the dash indicator. And you will have to make a latching relay like I made here in this post. And not hook wires to the bcm.  

https://www.gm-trucks.com/forums/topic/214990-oem-off-road-light-switch-install/?do=findComment&comment=2650532

thanks for the replay , & its a sad news to know about it , but as U mentioned that it will not hooked to the BCM so from the yellow line it will go also to the LED bar , is it ? 

 

or if U please send me a diagram to do it exactly what to ware .

 

& thanks allot  

Buckwild27 Enthusiast

Buckwild27

Posted
Posted
37 minutes ago, ashkanani said:

thanks for the replay , & its a sad news to know about it , but as U mentioned that it will not hooked to the BCM so from the yellow line it will go also to the LED bar , is it ? 

 

or if U please send me a diagram to do it exactly what to ware .

 

& thanks allot  

Yes in the picture the yellow wire goes from switch to tie in between the relays and the light bar. Everything in the diagram picture is as it should go.

ashkanani Enthusiast

ashkanani

Posted
Posted
5 hours ago, Homewrecker007 said:

Yes in the picture the yellow wire goes from switch to tie in between the relays and the light bar. Everything in the diagram picture is as it should go.

thanks allot , I'll order the relays & I'll do the wiring , I hope to do it will .

thanks bro.

Buckwild27 Enthusiast

Buckwild27

Posted
Posted
42 minutes ago, ashkanani said:

thanks allot , I'll order the relays & I'll do the wiring , I hope to do it will .

thanks bro.

You're welcome, let me know if you need anything. 

  • Thanks 1
ashkanani Enthusiast

ashkanani

Posted
Posted
59 minutes ago, Homewrecker007 said:

You're welcome, let me know if you need anything. 

👍 I'll do bro.

ashkanani Enthusiast

ashkanani

Posted
Posted
On 1/31/2024 at 5:40 AM, Homewrecker007 said:

Ok, so this is for anyone who has a 14-15 truck that still wants to do the OEM headlight switch with the Off-road button. Or if you want on/off without delay for the 16-18. I found that the Amazon latching relays were unreliable in functionality. This way works perfectly every time. I'm not a 100% sure but for the folks that have a 16-18 truck you might be able to run the grey wire to bcm and to the relays and still get the dash icon light to come on. I will test this when I wire up my 18 in the future.  

Screenshot_20240129_172016_Gallery.jpg

20240129_201918.jpg

20240129_134650.jpg

20240130_113918.jpg

20240130_114017.jpg

 

thanks guys , I did it & its work fine 👍 & every thing is OK , but I hope to find way that instrument cluster icon will light up.

thanks to all guys 

 

Lupillo13 Enthusiast

Lupillo13

Posted
Posted
1 hour ago, ashkanani said:

 

thanks guys , I did it & its work fine 👍 & every thing is OK , but I hope to find way that instrument cluster icon will light up.

thanks to all guys 

 

You can try connecting the gray wire to BCM amd see if it will light up the indicator light on the dash. GRAY WIRE TO PIN # 12 WHITE BCM CONNECTOR. Let us know if it works plz.

  • 6 months later...
wyattkb Enthusiast

wyattkb

Posted
Posted

Reviving this thread because I came across it in my search.

 

It looks like BT Diesel Works AutoSync can program the BCM to use the offroad light switch. 

 

I came here to ask if anyone knows if the part # 84448514 will work for a 2015? The part # 84168423 has been discontinued and is crazy expensive if you can even find it. 

 

The harness and new switch part # only comes out to about $100 so I was just going to send it and see if it works but thought I would ask here first.

Buckwild27 Enthusiast

Buckwild27

Posted
Posted
22 hours ago, wyattkb said:

Reviving this thread because I came across it in my search.

 

It looks like BT Diesel Works AutoSync can program the BCM to use the offroad light switch. 

 

I came here to ask if anyone knows if the part # 84448514 will work for a 2015? The part # 84168423 has been discontinued and is crazy expensive if you can even find it. 

 

The harness and new switch part # only comes out to about $100 so I was just going to send it and see if it works but thought I would ask here first.

The switches are all the same function wise. That's just an updated part number. Are you sure the autosync can make the offroad light switch work in the bcm? I know it allows you to change the turn off delay for trucks that have the factory programming. I have an autosync and I had to build the latching relay setup to run the switch in my 2014.

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