There is some descrepancies in these diagrams. Look at yours, then look at these:
PASSKEY (VATS) INSTALLATION (GM only)
This FUEL SYSTEM shutdown anti-theft system is based on a pellet (resistor) built into the steel shaft of the
ignition key. When the key is inserted into the ignition switch, the VATS (vehicle anti-theft system) computer
reads the value of the resistor to make sure that it matches the programmed code and then turns on the fuel
system so the vehicle can be started.
1. Locate two (2) wires in an orange vinyl tube coming down from the ignition switch. This tube will contain
two (2) WHITE 22 ga. wires or one WHITE and one PURPLE wire.
2. If you have the PURPLE and the WHITE wires, cut the WHITE wire in two. If your vehicle has two (2) WHITE
wires, you will need to test both of these wires with the ignition key turned to the ON or RUN position.
One will show ground and the other will show positive voltage. Cut the WHITE wire that shows voltage in two.
3. Attach the GREEN wire to the key switch end of the cut WHITE wire. See Making Connections. Page 2,
4. Attach the YELLOW wire to the remaining end of the cut WHITE wire.
5. Attach the WHITE wire to the ignition I wire (white heavy gauge wire from the remote starter or from the 4-
relay pack) that is tied into the ignition wire on the vehicles ignition switch harness.
6. Attach the RED wire to a constant 12V wire fused at 3 amps.
7. Connect the ORANGE wire securely to ground.
8. Connect the BLUE wire to the smaller of the two (2) WHITE wires on the remote starter.
9. The PURPLE and the YELLOW with BLACK stripe wires are not used and should be taped up.
10. Put the key in the ignition switch and start the vehicle.
11. Wait until the L.E.D. light on the 791 goes out.
12. Turn off the vehicle the system has learned the resistor value.