Bill: Good to hear from you again - How about sending down some of that warm England sunshine? It's "brass monkey" weather down here!
I had thought that I sent my email details - but I just re-checked in my "sent" file and it's not there- apology. Will remedy my error shortly. I'm keen to get more UK mk7 models into my database - so I'm looking forward to receiving your admaps
I'm familiar with the "August 2012" Wiring diagrams. I've just re-checked the information in my version with the VW wiring diagram for the rotary light switch (which VW calls EX1) and the connection data is the same (I think). The diagrams themselves are different because I created the version in my picture. But I believe that the information in the two documents is compatible!
The best way for me to explain the anatomy of the descriptors that VW use for their Leuchte channels is by way of an example. I've randomly chosen the left Daylight Running light from my car for this purpose and I've pasted below the Leuchte channel set for this lamp
Here's how I believe that VW's nomenclature operates:
Column #1: is a raw identifier and a complete Leuchte channel-set has 19 channels (hence the parentheses 1 to 19)
Column #2: is a simple statement of the nature of the adaptation channel meaning "lamp" in English (I think)
Column #3: the number "4" always aligns with the "4" in column #8. "TFL" is the German abbreviation for the nominal light function. In this case TFL stands for
Tag
Fahr
Licht which is German for "Daytime Running Light" (I think). I've provided a complete list of these abbreviations in my paper.
Column #4: The "L" means "Links" which means "Left" in English (for left side of the car).The right side laps will have the abbreviation "R" for Reicht in German.
B4 is the connection point of wire for this Leuchte channel set on the BCM. If you look at VW's PIN-OUT diagram for the BCM on your car, you should find the information below
Notice that the PIN-OUT confirms the Leuchte channel information. That is, PIN-4 on socket B is connected to the Left DRL (Hence the descriptor B4). I'm really not sure how your lamps are configured in England, but this is primarily how I produced the location pictures for the lights on my car in my paper (i.e. by linking the Leuchte channel information with the BCM PIN-OUT data). You will find the PIN-OUT designations at the back part of VW's "Basic equipment" document (this is the same as the wiring diagram for August 2012 that you mentioned earlier).
Column #5: is the descriptor for the function of the adaptation channel.
Column #6: there is only one channel that has the HD setting (i.e. Channel (7)). This channel determines what the lamp will do when the hatch lid is opened. HD stands for "HeckDeckel" which means "Rear Lid "in English. There are just 2 x allowable settings for this channel: "Only if closed" and "always"
Column #7: this is the "apha" identifier that I describe in my paper. A Leuchte channel-set has 8 x alpha channels that can be individually programmed. Each "alpha pair" is then given a "Dimmwert value" (i.e. 0-100 from incandescent lamps and 0-127 for LEDs) and a "Dimming direction" value (of either "maximise", or "minimise"
Column #8: this part of the descriptor links the Leuchte channel-set to the lamp's twin channel-set titled "Lighting Configuration". In the same way that there are 665 x Leuchte channels, there are also 665 x Lighting Configuration channels in the BCM. Each Leuchte channel set has its twin "lighting configuration set". Read my paper regarding my theory about how the two are related.
Column #9: This is the setting for the adaptation channel. Allowable values vary but I have included a complete list of all the allowable settings in the latest version of my paper.
I've now had the instrument cluster lighting tweak operating in my car for about 6 weeks now and I reckon that it's very nice indeed-even if I say so myself! The two dials in the cluster are illuminated during daylight hours and the dimming level adjusts according to the light level in the cabin. The "anchor point" of Hex 64 appears to be just right (IMO) and I think that it's no coincidence that this value is decimal 100. I suspect that VW had this value in mind when they set-up the response characteristics of the photo-transistor in the cluster assembly (this is an entirely unproven hypothesis, but I don't believe in coincidences!).
Cheers
Don
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