[Hocrest]

The "starter interrupt relay" gets a signal from pin 13 on the security system computer.

The interrupt relay is connected to a square, white, 4 conductor plug. According to the FSM it appears to be located under the drivers side of the dash, it appears to be the connector closest to where the wiring harness goes through the firewall. It has 4 wires going to the relay;
Pin 1 - Blue/Red - 12v+ from fuse 23 (inside fuse panel)
Pin 2 - Black/White - Ignition Switch
Pin 3 - Blue/White - pin 13 on Security Module (above glovebox, or under rear deck if car has PS airbag)
Pin 4 - Blue/White - Inhibitor Switch (Switch is along drivers side of transmission, Connector is one of the large connectors that goes to the transmission under the hood, this one has 12 wires)

I'm guessing wire 2 and 4 are going to be thicker than 1 and 3???