Hi all i have a problem with my 88 S4, with the key off and removed and the HVAC flap positon slider is moved to any position other than off it will continue to run and the fan switch will power the fan in any of its selected positions other than off. I have swiched relays and have a new ignition switch and headlight switch anybody have a similar problem? Thanks for your time Stan

 

I'm having similar problems at the moment - must be the time of year! Take heed of this thread
https://rennlist.com/forums/928-forum/237806-strange-electrical-happening-update-with-pics.html
I'm still sorting as we speak.....