I want one! 
DRL Operation w/ Headlights On
This isn't an exact how-to on getting your DRLs to operate with headlamps, but more of a resource on how I did it on my own car.
I believe there are multiple ways of accomplishing this, for example, reprograming the BCM, but for me this was cheapest/easiest solution for me.
The materials I used were; 1 single pole double throw 15 amp relay, breadboard, wire, heat shrink, solder (soldering iron), and 1 eyelet connector.
So, if you look at the attached headlight and DRL wiring schematic, it is seen that the BCM provides power to both DRLs via a violet with green stripe wire.
My idea was to use a spdt relay to switch from BCM power to power provided to the headlamps from the low beam relay. The first attachment illustrates this. Basically, when the electromagnet of the relay is NOT energized, the relay maintains a connection between the BCM and DRL LEDs. When the electromagnet becomes energized, the relay then switches to the other contact and completes a circuit between the DRL LEDs and the voltage supply to the head lamp HIDs.
The second attachment shows the location of the two wires you'll need access to. The headlight voltage supply, yellow in color, and the BCM V+, violet with a green stripe. There are two yellow wires inside of the loom, one is for the right headlight and the other for the left. Either one will work for our purpose.
The fourth attachment shows the connections being made in series between the BCM and DRLs.
The last attachment shows the connection to the headlamp voltage supply wire and ground.
The fifth and sixth attachments show the spdt relay soldered to the bread board with the wire connections. I did place this inside of a sealed project box to protect it from the elements, but I forgot to take picture of that.
Lastly, the seventh attachment is a picture of my car with both the Headlights and DRLs on at the same time.
If you guys have any questions, concerns, or comments please fire away.
I believe there are multiple ways of accomplishing this, for example, reprograming the BCM, but for me this was cheapest/easiest solution for me.
The materials I used were; 1 single pole double throw 15 amp relay, breadboard, wire, heat shrink, solder (soldering iron), and 1 eyelet connector.
So, if you look at the attached headlight and DRL wiring schematic, it is seen that the BCM provides power to both DRLs via a violet with green stripe wire.
My idea was to use a spdt relay to switch from BCM power to power provided to the headlamps from the low beam relay. The first attachment illustrates this. Basically, when the electromagnet of the relay is NOT energized, the relay maintains a connection between the BCM and DRL LEDs. When the electromagnet becomes energized, the relay then switches to the other contact and completes a circuit between the DRL LEDs and the voltage supply to the head lamp HIDs.
The second attachment shows the location of the two wires you'll need access to. The headlight voltage supply, yellow in color, and the BCM V+, violet with a green stripe. There are two yellow wires inside of the loom, one is for the right headlight and the other for the left. Either one will work for our purpose.
The fourth attachment shows the connections being made in series between the BCM and DRLs.
The last attachment shows the connection to the headlamp voltage supply wire and ground.
The fifth and sixth attachments show the spdt relay soldered to the bread board with the wire connections. I did place this inside of a sealed project box to protect it from the elements, but I forgot to take picture of that.
Lastly, the seventh attachment is a picture of my car with both the Headlights and DRLs on at the same time.
If you guys have any questions, concerns, or comments please fire away.
Attachments
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If I have time this weekend I'll purchase a relay and some female connectors to illustrate how you would wire up a cube relay. You could always look into a local car stereo shop to help with the install. There should be enough information in my first post and Rottster's post for them to do it. If you have any questions, don't hesitate to ask.All I can say, is the end result looks great! If I could just hook a couple wires together that would be great .....you lost me on all this, but really cool look. **** I wish I could be that smart
This is fabulous, just ordered both. May need guidence on how to hook up, I'm good at tracing wires and installing stereos, I'll just need to know where to look. Thanks again, we'll have the some Bad Ass looking ss's
ccasion14:1 - 20 of 244 Posts
