It was a complete assembly for a 2018-2019. I know some folks open headlights up then bake them back together in the oven.
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LED Daytime running lights?
- Thread starter Manny328
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bradac
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Hey guys, just an update,
I installed the 2018 Tahoe headlights with the brighter LED stripe on my 2016.
With the harness I got from Matt, Which will swapped the standard DRL low beam to the LED, the problem is this doesn’t let the 2018 headlight run at max brightness with this harness.
Whats really interesting, is if I switch the Parking lights on, and remove the pigtail harness from matt, and just connect it directly like the normal headlight I can get Max brightness with the 2018 headlight I installed in parking light mode. This also happens when I remote start the car. However when the car is in drive without the harness it’s just low beam.
My guess it has todo with relays or not sending enough power. Maybe someone could answer this? I know a BCM reporgram would prob fix it, but looking for alternative solutions.
Attached is the photo of my 2016 with 2018 headlight with max brightness with Parking lighting engaged, when I put it in drive just switches the low beam on.
The downfall to using the parking lights engaged, is no auto headlights, having to turn it on and off, and the rest of the parking lights being engaged in the vehicle during the day.
I installed the 2018 Tahoe headlights with the brighter LED stripe on my 2016.
With the harness I got from Matt, Which will swapped the standard DRL low beam to the LED, the problem is this doesn’t let the 2018 headlight run at max brightness with this harness.
Whats really interesting, is if I switch the Parking lights on, and remove the pigtail harness from matt, and just connect it directly like the normal headlight I can get Max brightness with the 2018 headlight I installed in parking light mode. This also happens when I remote start the car. However when the car is in drive without the harness it’s just low beam.
My guess it has todo with relays or not sending enough power. Maybe someone could answer this? I know a BCM reporgram would prob fix it, but looking for alternative solutions.
Attached is the photo of my 2016 with 2018 headlight with max brightness with Parking lighting engaged, when I put it in drive just switches the low beam on.
The downfall to using the parking lights engaged, is no auto headlights, having to turn it on and off, and the rest of the parking lights being engaged in the vehicle during the day.
Hey guys, I’m having an issue with my Tahoe as well. My truck has been rebuilt and it has the halogen headlights. However, one headlight’s LED is significantly brighter than the other. I bought another headlight on eBay (stated it fits 15-17 models, mine is a 16) and I have the same outcome after I switched it out. Are we sure that the 2018 halogen headlights do indeed simply just have a brighter LED strip on them?
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Rdr854
Full Access Member
Assuming that you are saying that your truck is a salvaged vehicle, I wonder if the issue is that your truck was rebuilt with a cobbled together front end?
It’s actually not that bad. I’ve had it for a year, the truck has been solid. I’ve had a few friends that are mechanics look at it and they all agree.
The only thing that was not done right was the headlights. I contacted the person who fixed the truck and he said they were both halogen headlights but from different suppliers.
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No. In my research I’m coming across that the headlight part # is 84294343. However on the GM parts websites that I’m finding them on they say they are only compatible with 2018-2019 models. Shouldn’t they fit in my 2016 LT as well? That’s my hesitation right now.
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Also the sticker on the left headlight with the brighter LED strip is warn down. Same as the right. I am finding used halogen headlights on eBay that state 2015-2019 headlights with the part number 84294343. I just want to be sure it will work in my 2016 LT
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Rdr854
Full Access Member
I would recommend that you go to the dealer for the headlights to make sure you have the correct ones. For the LS and LTs, there was a change with the 2018 model year with respect to the daytime running lamps. For 15-17, the DRLs were in the halogen headlamp bulbs. For 18-20, they are in the LED strip. Another consideration might be in. the wire harness if a later one was used or one was pulled from an LTZ or a Yukon.
Did you bake them to loosen the glue for separation?
I've done this before on Fords. But the complex curves had me worried about breakage. I want to separate my current heads to matte black the interiors pieces. And probably install a brighter LED strip like you have
I've done this before on Fords. But the complex curves had me worried about breakage. I want to separate my current heads to matte black the interiors pieces. And probably install a brighter LED strip like you have
Yes. I baked it at 250-275 degrees F which was a little too hot. This was a damaged headlight I bought for $50. It’s a 2015-2017 model. I believe it’s from a 2017 Tahoe. I’m using it for R&D to determine if the led strip can be made to have the same brightness as the 2018+ headlights.
Since I have a Yukon, I need someone to take some voltage measurements at their Tahoe/Suburban headlight connector under certain conditions.
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Since I have a Yukon, I need someone to take some voltage measurements at their Tahoe/Suburban headlight connector under certain conditions.
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Hello, new to the forum, researching the DRL head lamp vs. LED strip for my '17 Suburban. At this point I don't think Chevy will abe providing a solution. I'm planning to install HIDs in the coming months, and I definitely don't want to use the HIDs at full power for DRL(HIDs are not dimmable as I understand it). Like many here, I really want to use the LED strip for DRL. I've seen a few solutions posted here, but I don't want to do any cutting/splicing on the harness. I'm thinking about building an electronics module that will power the LED strip and turn off headlamps during daylight operation (ie DRL mode) and automatically switch back to original headlamp/LED drive signals when headlights are fully ON, whether from Auto or manual turn on. I'm hoping a plug&play solution is possible. If I had such a module, from what I understand, I should be able to then install a standard HID aftermarket kit installation and have the system give me DRL via LED and HID for low beam headlights. I will post progress here on what I find out, unless there is a better thread on the forum for this.
Does anyone know what the PWM frequency used for the headlamps is? I will verify at some point, but it would help with some early designing if this is known.
Thanks.
Does anyone know what the PWM frequency used for the headlamps is? I will verify at some point, but it would help with some early designing if this is known.
Thanks.
the DRL runs at a lower voltage 9volts if it's on the low headlights or high beams...
if it's on it's own reflector or signal bulb then it will run at the full 12 volts..
on the LED you will need to use diodes to prevent feedback of power over the DRL and headlight circuit... other wise when it's DRL mode it will burn out the DRL fuse on the spot might cause damage
just don't make a full bridge rectifier LOL
the LED module should have it's own driver that runs off of 12volts this can be confirmed with a mut
also running LEDS without a load will cause it to display a DRL Bulb out message....
if you can run the DRL circuit to the Fog lamps... would be the best bet
as the DRL are typically off when the fog lamps are able to turn on
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Thanks for the info and tips. Do you have an idea of how much load the DRL circuit needs in order to avoid a bulb failure detect?
25 watts minimum if they use the 3157 bulbs might need a smoothing cap or driver to prevent flickering/strobing
First check the fuse size before hand... on the DRL (25 watts =2 amps)
Ok, thanks for the input.
Been spending a good amount of time studying the lighting schematics for my truck; little bit of progress on ideas for the electronics, but I need more information on how the DRL PWM operates in terms of pulse frequency to help with electronics design; looks like I will need to get an engineer buddy to help get the measurements from the DRL and LED operation. Not sure when that will happen given holidays and work schedule...Will post back results when I get them.
