These swords, also known as blower resistor and final stage, 

90.947.00.882 / 8.3900 15.2 / 9094700842 90 947 00 842

Easy to install and instructions are available for the do-it-yourselfer.

Typical symptoms include: A/C - Heater blower will only run in the "MAX" position or continues to run even in the "OFF" position. It can also result in the loss of one or more fan speeds, or an nonoperational climate control unit.

Fits the following models:

1988-95 E32 (735i/iL,740,750)

1989-90 E34 (525,535, & M5)  ** If your E34 5 Series was built AFTER 12/89 then you DO NOT have a sword**

 I only sell the good used OEM units, never aftermarket so they are the same quality as your original. Thanks for looking!