I need some help. I had a Pentair SAM light that is 4 years old and leaking water and no longer worked. I purchased a standard white Pentair replacement (the LED color changing was too $$$ at $700). Anyway, I installed the replacement light and pulled the cord to the Intellitouch box. I rewired the new pool light but it immediately trips the GFCI when the power is restored. Any ideas on what could be wrong?
The black wire from the pool light goes the line side of the #2 switch, the white wire to the line side of the GFCI outlet and the ground to the grounding bar within the intellitouch box (where the gfci and box are grounded).

Any idea of what could be wrong? Without the pool light connected, the gfci plug works if I plug something into the outlet. I attached a pdf of the wiring. The GFCI was replaced first- before buying a new pool light so it should be okay. Thanks.