brake wear indecator on 2002 Volkswagen Jetta TDI

i just did the frt. brakes on my Jetta. Before i started the indicator light was not on but now that i did them the indicator is on. i inspected the connector and put dielectric on the connector but it didn't solve the problem. i also inspected the wiring and found no brakes or shorts in them. at this point i don't know what the problem could be.

Asked by for the 2002 Volkswagen Jetta TDI
the sensor on the pads is no good