Yes, I noticed that too. I'll just get a fader to put in the slot, even though it won't be functional.

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1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!

No need to put that useless fader thing in. Put in any switch you want, and wire it to do something clever. Gsxr has used it to turn on hard wired radar detectors, power to the radio independant of the ignition switch, etc. Another friend used it to turn on driving lights independant of the headlight switch. Another friend used it in the fuel pump circuit for theft prevention.

I wired an extra rear light switch to the high speed circuit for the aux fans at the temp sensor on the head, so that I can turn them on when driving around town with the AC on. Running them makes a big difference in the cooling ability of my "converted to r134 by the PO" air conditioning in my TE.

Some day I hope to use it to energize the force field around my car to prevent texting drivers from rear ending me