since when did a 4k have an ecu??????? and the ecu doesnt control the start neutral circuit. Its switched on the side of the transmission or gear shifter.

I just had a quick look at a ke70 wiring diagram, and the BLACK/WHITE trace wire, goes from the ignition switch THROUGH the neutral start switch and on to the starter.

are you sure that black/white wire connects to the red wire in that plug? what i mean is, if thats a 6 pin plug, it sorta looks like the black/white goes in the 'upper' row of terminals, where as the red wire looks as if it goes in the 'lower' half of the plug. so they dont actually connect.

where does the black/white wire from the steering column go, follow that under the dash and into the engine bay, thats your best bet for success.

i havent wired an auto car yet, all have been manual, BUT they have all had the starter wire coming out of the fuse box