also ich bekomm jetzt erst mal aus Kanada 4 Relais von Steve zum Testen. Er schreibt:
Hi Erich, I now have a nice solution - a modified relay that simply replaces K22 in the Auxiliary Relay Box. No other modifications are required at all.
Very easy to test - just pull connector X87 at the S36 Temperature Switch and short together the BRN and BLK wires and see that the Auxiliary Fan runs at high speed, with the ignition off.
It will work with E32 and E34 the same.
I will send you 4 pcs for your testing. - Steve
K22 sitzt hier in der Zusatzrelaisbox
http://www.e32-schrauber.de/bmw/date...8_88-07_94.pdf