E-Fan Conversion Autocool Controller Part 2 | E39 M54

In this part I'm wiring up the e-fan controller made by autocool. Went with this option for the features that it provides: soft-start, cool down timer, fail safe, and A/C. PSA: make sure to disconnect battery to not short anything just in case Constant 12V is provided from the aux fan plug 12V switched is provided by the o2 sensor harness pin 1 A/C 12V is jumped from 12V switched Parts: Autocool AMP 85 e-fan controller: https://www.autocoolguy.com/product-page/auto-cool-nb-50-no-buzz-50-amps Timestamps: 0:00 Intro 0:45 12V switched wiring 7:17 12V constant power wiring 8:05 AC compressor wiring 9:10 wiring the controller 14:27 outro Mods: Airlift 3p management 2.5 gallon tank Airlift performance front struts Koni yellow rear shocks with OEM bags Apex ARC-8 wheels Alpina lip with EZ lip VF engineering supercharger kit with 2.87" pulley M50 intake manifold ICV delete PCV delete SAP delete Schmiedmann headers and 2-1 with race-cats Vibrant universal bottle resonator Valvetronic universal 3" inlet/outlet valved muffler Quaife LSD Bavsound speakers 5Ch amp Euro armrest UUC DSSR e60 "short throw" shifter M-sport steering wheel