alright. so tonight i got a deck wired in. worked fine. but on my drive home the voltage flatlined. i had maybe 7-8 volts being read on the gauge. i believe something is sapping the alternators charge somewhere. iv unplugged everything we added in today. i however have the fans connected to the batt positive, to a 30 amp switch, then grounded. the fan system was ran through 14 gauge wire and hooked up onto a switch under the dash. i changed it out with 10ga wire and a bigger switch. where should i start with this issue. i had the same issue when i tried to wire in the fog lights. im just worried that somewhere in the harness is a massive clusterf%*k of a mess. alt seems to be fine but ill check tomorrow morning for sure. its relitivley new