Turbo timer in a R33 GTST

[RWDpower]

Well
Im going puting a HKS turbo timer in my spec1 r33 skyline.
I have a good idea how to wire it up only 2 wires in not sure of.
Its the black wire going to the ECU earth and
the white wire going to the oxygen sensor.
Where on the ecu do i connect these wires/ what colour wires do i conect these 2.

thanks

[RWDpower]

bump any1 know