This is how you reset belt failure light.
1. Make sure ignition switch is off.
2. Remove the Seat.
3. Disconnect both sets of 4 pin connectors, these are the gray and black connectors just infront of the tool pack.
4. Reconnect these 4 pin connectors to their opposite gray to black and black to gray.
5. Turn on the ignition switch.
6. Observe the belt check indicator (It should be flashing quickly).
7. Disconnect the belt switch (this is the 2 pin connector above the torque converter cover).
8. Observe the belt check indicator light (is should be flashing slowly), let it flash for at least 5 seconds.
9. Turn off the ignition switch.
10. Disconnect the mismatched 4 pin connectors and return them to black to black and gray to gray.
11. Connect the belt switch 2 pin connector.
12. Turn on the ignition switch, no belt check indicator light should be flashing