Mosfet wiring for ignition Key

Need some help
Water got into the Mosfet for the Ignition key and began bleeding electric through when in off position
I bought a P-Mosfet and a N-Mosfet but could not get either to work . When wired as I thought both were in the “on” mode with no effect of the Key switch
any help would be grateful, researched all say and NO Joy!
thanks K.