vw_norm
Gone, but not forgotten.
LED DRL Mod, byte 18=24 now!
Here is another chapter in the Rear LED, Chinese HID/DRL lights. I utilized the 'coming home' harness that came with the lights (but didn't use) and with the use of a couple relays, made the LED DRL's come on whenever the light switch is in Auto, and whenever the Auto sensor turns on the head lamps, or I switch to just driving lights or headlamps, the LED DRL's turn off (from full brightness) and stay on at 1/2 power with the angel eye. This is triggered from the marker light circuit. I also changed Byte 18 again to be 24. This is not a code that I had previously tried, but it gives me the rear lights with eyebrow and ring dim as driving lights and lights up the bullets and the rest bright for braking. This is based on the wiring diagram in post #110 above. Plus I have the rear fog as well, controlled from the BCM. Only issue is that when I start the car, it does an obvious lamp check, flickering all the lamps a couple times, and it gives me a rear fog bulb out, but if I turn the rear fog on, this BOW clears. I've seen rear fog 'cold monitoring' in other threads for other VW, so I think it is in the BCM, but need to find it. My front amber turns are just that, amber turns or 4 way flashers and are not on at any other time. I only utilized the cables with the DRL connectors on them, and spliced this to my own wiring harness, which I ran into the passenger compartment through the firewall. Another benefit of this Byte 18=24 coding is I now have same side park lights. It was opposite corners previously. I also went through my BCM coding and turned off all items associated with DRL's. Don't need them any longer. the LED DRL's are also grounded to the chassis, I just didn't show that connection here in this new schematic. A PDF is also located here: http://ppl.ug/0cL6fIRpDAE/
EDIT 8/18/13: Changing byte 18 to anything other than A0, will mess up your rear stock tail lights, so any changes to Byte 18, which will also affect the behavior of your front HIDs and LED DRLs, really needs to be done in conjunction with LED rear tail lights as well, with the necessary rewiring to make it work as documented in these threads to get amber turn signals on all 4 corners. Amber turns seems to be rather ubiquitous with the many other Byte 18 codings I experimented with. Despite trying over 120 different Hex codes for Byte 18, nothing bad happened, some unexpected things happened (like ALL lights on at once and no control over them at all), but all in all, it was a very interesting process, albeit a time consuming search. I don't know if this will be the final configuration, but I think that I'm close to the end of the trail for getting this working as desired.
Ross-tech came out with a beta version, 12.10.7 and I found at least one new feature - byte 26, bit 5 gives the ability to turn off the dash DRL indicator. Since my LED DRL's are independent of the BCM now, I turned off all DRL functionality in the BCM, like 6 or 7 places. Here is my current BCM coding for your viewing pleasure:
6F200EFFFC2928D4080802833600812006F1240047A005B0648860009C70
EDIT 8/21/13:
The law of unintended consequences struck today when I found out very early this morning that when I flipped the high beams on, my HIDs turned off. Verified that I was not seeing things once I got to where I was going - No HID's with high beams on. So after I got home, I started looking at the coding, and ended up turning Byte 14, bit 3 on. This is for Bi-Xenon headlights (with shutter) installed. High beams and HIDs all on, back to normal!
Here is the latest coding:
6F200EFFFC2928D4080802013600892006F1240047A005B0648840009C70
I will take some video/pictures this weekend to show how they look.
Here is another chapter in the Rear LED, Chinese HID/DRL lights. I utilized the 'coming home' harness that came with the lights (but didn't use) and with the use of a couple relays, made the LED DRL's come on whenever the light switch is in Auto, and whenever the Auto sensor turns on the head lamps, or I switch to just driving lights or headlamps, the LED DRL's turn off (from full brightness) and stay on at 1/2 power with the angel eye. This is triggered from the marker light circuit. I also changed Byte 18 again to be 24. This is not a code that I had previously tried, but it gives me the rear lights with eyebrow and ring dim as driving lights and lights up the bullets and the rest bright for braking. This is based on the wiring diagram in post #110 above. Plus I have the rear fog as well, controlled from the BCM. Only issue is that when I start the car, it does an obvious lamp check, flickering all the lamps a couple times, and it gives me a rear fog bulb out, but if I turn the rear fog on, this BOW clears. I've seen rear fog 'cold monitoring' in other threads for other VW, so I think it is in the BCM, but need to find it. My front amber turns are just that, amber turns or 4 way flashers and are not on at any other time. I only utilized the cables with the DRL connectors on them, and spliced this to my own wiring harness, which I ran into the passenger compartment through the firewall. Another benefit of this Byte 18=24 coding is I now have same side park lights. It was opposite corners previously. I also went through my BCM coding and turned off all items associated with DRL's. Don't need them any longer. the LED DRL's are also grounded to the chassis, I just didn't show that connection here in this new schematic. A PDF is also located here: http://ppl.ug/0cL6fIRpDAE/
EDIT 8/18/13: Changing byte 18 to anything other than A0, will mess up your rear stock tail lights, so any changes to Byte 18, which will also affect the behavior of your front HIDs and LED DRLs, really needs to be done in conjunction with LED rear tail lights as well, with the necessary rewiring to make it work as documented in these threads to get amber turn signals on all 4 corners. Amber turns seems to be rather ubiquitous with the many other Byte 18 codings I experimented with. Despite trying over 120 different Hex codes for Byte 18, nothing bad happened, some unexpected things happened (like ALL lights on at once and no control over them at all), but all in all, it was a very interesting process, albeit a time consuming search. I don't know if this will be the final configuration, but I think that I'm close to the end of the trail for getting this working as desired.
Ross-tech came out with a beta version, 12.10.7 and I found at least one new feature - byte 26, bit 5 gives the ability to turn off the dash DRL indicator. Since my LED DRL's are independent of the BCM now, I turned off all DRL functionality in the BCM, like 6 or 7 places. Here is my current BCM coding for your viewing pleasure:
6F200EFFFC2928D4080802833600812006F1240047A005B0648860009C70
EDIT 8/21/13:
The law of unintended consequences struck today when I found out very early this morning that when I flipped the high beams on, my HIDs turned off. Verified that I was not seeing things once I got to where I was going - No HID's with high beams on. So after I got home, I started looking at the coding, and ended up turning Byte 14, bit 3 on. This is for Bi-Xenon headlights (with shutter) installed. High beams and HIDs all on, back to normal!
Here is the latest coding:
6F200EFFFC2928D4080802013600892006F1240047A005B0648840009C70
I will take some video/pictures this weekend to show how they look.
Last edited:
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