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      03-10-2016, 08:04 AM   #3
ortho281
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Drives: 2011 E92 M3 6MT
Join Date: Aug 2010
Location: Katy, TX

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Quote:
Originally Posted by bigjae1976 View Post
If its like most other fans...there's a relay somewhere that probably has an open circuit. The fan is probably wired to shut off when the relay coil is activated. When you deleted the AC and HVAC modules, you may have removed a ground that would keep the coil energized and the fan off.

I think you should either wire the fan to a manual or temp controlled switch. I used a DPDT switch in my E46. I have 3 positions: 1) off 2) on w/ ignition on 3) on w/ignition off. Should be pretty straight forward...switch, SPDT, relay, and some wires.
Thanks James! The manual switch is one of the options we have been considering. I would however prefer a temp controlled switch to eliminate forgetting to switch the fan on/off.
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