Ah, yet again the subject of DRL comes up. there have been several methods of Killing DRL that have been discussed, it comes down to personal preference and what you are running for headlights, here are the known options:
1) Add the DRL Kill Relay (keeping unlock headlight illumination) 2) Add the DRL Kill Relay (Killing DRL and Illumination) 3) Install the "Cap Mod" to make DRL/Head Illumination to run at full brightness 4) A combination of Options 1 & 3 5) A combination of Options 1 & 2
Personally, I run LED, and don't care about killing DRL, in fact, LED or Halogen will run just fine on 70% power. BUT if you have Xenons, you gotta do a mod or you WILL kill your Ballast (Driver, Flyback, the box that makes your Xenon bulbs fire up) They want 12 Volts, and if they don't get it, they will die.
I will carefully diagram all the options, I may make up a few kits if people are interested, but I'm putting it all here so if you can handle a little wiring, you can do it yourself. Everything is done in the fusebox under the rear, driver-side passenger seat. You will be cutting and splicing, and Let me put this bluntly, if you have no skills and often fail at technical stuff, call that 1 buddy you got who has the skills and offer him beer. if you mess this up, you will have no headlights, or worse blow up the BCM (body control module) and not even be able to start the truck. YOU HAVE BEEN WARNED!
I think the best of both worlds is option 4, I like the illumination at unlock, and running the CAP mod makes it brighter, If you are doing Option 1 and have HID Xenon bulbs. you MUST do Option 3 also!
Page Incomplete for now, consider it a work in progress
CAP MOD: DISCLAIMER: I am NOT taking credit for this, it was done by Chevy6000TBSS and he did it so well, there was no need for me to re-do it (at least, until I find an easier MOD)
DRL Capacitor Mod Purpose of this mod: To make the low beam head lamp circuit operate at a full 12 volts when in DRL (Daylight Running Lamps) mode. Under normal DRL mode operation without this mod the circuit operates at around 7 volts if not less. If you are a HID user, you need to do this mod if you want to retain the DRL feature. HID ballasts are not designed to operate at these low voltages which can cause them to fail or not ignite the bulb due to the low voltage. This mod is also good for those who want brighter DRL lights from their halogen bulbs or want brighter perimeter lights from your key fob unlock/ lock feature.
I just did the DRL capacitor mod to allow for full voltage at the headlights when in DRL mode. I know this has been done many times and long ago. I just wanted to show some pics of how I did mine. First remove the interior fuse block's black cover that is under rear driver side seat. It just pops off. Next locate the PINK/ white striped wire within the harness of wires going to this fuse block. Be careful as their is a red/ white striped wire that is light in color and looks very similar. Then place your tee tap with the capacitor onto this pink/ white striped wire. Next, remove the closest seat bracket nut (18mm Deep socket) and place the end with the ring connector onto the seat bracket stud and tighten the nut back down. Finally, replace the fuse block cover and test the circuit to make sure you are now getting 12v to the low beam head lights when in DRL mode. Once this is verified, the DRL Capacitor Mod was successfully performed.
Electrical parts you will need:
-10uf 35volt capacitor -16-14 gauge butt connector (Blue) -18-22 gauge Tee tap with male connector (Red) -6" of 16 gauge stranded type wire -10-12 gauge large (1/2" size hole) ring terminal (Yellow) -Heat shrink tubing.