For wheel well light switch is the "Wheel_Lights" parameters used (as you can see in the b737 overhead image-map).
What do you want to get? Where is this annunciator is located in the real-life b737?
If you need the LED that should be simply to show the switch current position, just assign the "Digital_Output" SimVim parameter in the configurator, then click on assigned table cell and select Conditions. Then select the input number to that this switch is connected.