Mitsubishi Pajero/Montero 1995 Ignition

Hey, my Pajero electrics started getting all buggy and eventually stopped working and I measure a voltage drop to about 4-6V when turned key to ACC or ON. Battery is fine as can turn the starter over, also can clutch start but it seems to me that I have some electrical short. I took apart my ignition switch cylinder and have continuity to chassis when ACC / ON (dw I disconnected battery first). Does the Ignition switch have a GND wire because my Black/white wire is about 5Ohms to chassis.

Any ideas / any1 got any idea what I can find a 1995 wiring diagram?