Tested everything out when I got home from work yesterday, and I couldn't find anything the wasn't working right. Radio, AC, etc. all worked fine, blinkers, brake lights, wipers, everything I could think of. Just went ahead and put it back together with the wire still disconnected. Will probably have the dealer check it out next time I go in.
BMS JB4 | BMS DCI | ETS intercooler | ETS charge pipe | HKS SSQV III | CP-E downpipes | BMWP exhaust | P3Cars vent gauge | LUX V3 angel eyes | Weisslicht smoked LED sidemarkers | Blackline LCI taillights | Slek Designs front lip | BMWP grills | Seibon M3 hood | iCarbon CSL trunk | iCarbon rear diffuser | BMWP suspension | Yokohama Advan Neova AD08s | Work Brombachers - FLOSS edition | H&R spacers | TC Kline studs | Project Kics R40 lugs