Thread: Series vs Stage One Ignition Wiring

I am using a stage one wiring harness and have had to replace the ignition tumbler but the wiring layout on back of the ignition tumbler I bought is different to the stage one (pic attached - the old one is the white backed one).

Can anyone help with the series/defender type ignition barrel layout (5 pin pic attached - black back one).

I need to connect 3 wires as follows (in brackets what I have tried as connections)
(1) the Brown (permanent 12v) - (to terminal 5 - at 12/1 o'clock)
(2) White/Red - starter solenoid (to terminal 4 - at 5 o'clock)
(3) White - goes via fuses to run everything - (to terminal 1 at 2 o'clock)

The White wire has to be on at all times - critical in my case as I used the coil feed wire from this harness to feed power to an after market computer (via a relay). So when cranking I need power to the (3) White and (2) White red wires and when cranking stopped only to the White wire.

When I crank the truck does not start - I have yet to test but assume terminal 1 is cut off in crank mode.

I believe terminal 3 (big one at bottom - at 6 o'clock) is for fuel pump? so I am wondering if I should connect my white to that so that my computer gets power while cranking and when in run mode.

All comments/suggestions etc welcome