Originally Posted by xxscaxx
if the wire wasn't heavy enough wouldnt it NOT be giving enough power to light stuff up or anything?
regardless resistance will not cause stray voltage.
I would try disconnecting wires from your distribution block until the gauges turn off, this will tell you which circuit its coming from.
I guess being that subarus use a lot of switched grounds you could have the circuit the gauges are getting illumination from could be shorted to ground...
check a wiring diagram for wires you spliced into for the gauges.