well i fixed mine fellas all it was was the grommet on the passenger side in the firewall for the ecu there is a tear in it from my amp wire and other accessories the water was going down the cowl, inside the wheel well and drippin on the wires and riding it all the way down.. some monkey snot did the trick!

91 pickup 5.29's US GEAR.35x 12.50 trxus m/t.5 speed swap- SOLD!
96 4Runna limited-toytec/OME lift,diff drop Nitto 285/75/16 Elocked=butter
07 FJ cruiser 3" DR coilovers 285/75/16 nitto TG. allpro sliders