How do i get my kicker 500.2 protection light off

Your Kicker has gone into protect mode and will stay that way until the component level problem is found and fixed.

Check power make sure you have solid 12 volts. Disconnect speakers, shorted speaker can cause protection mode to engage. If still in protect mode will need to repair. Kicker does out of warranty repairs on kx series amps or try T.I.P.S contact at linearpower.com. Iirc Ray @ tips was one of the engineers at kicker back when kx series was introduced.

Replace amp

To many speakers not enough amp

try hooking up only the power ground and remote see what happens if protection light is on then u have a problem with amp if it goes off then hook up rca if still off then hook up speaker wire if it turns on then u have a prob with speakers

ground loose or unsecure...bare wires touching?

put a 12 volt fan on it

The most likely problem is that the output transistors are shorted. There are no protection circuits in these. Depending upon the number of transistors in the side that is shorted, the cost for repair could easily exceed the replacement cost. Check with a local shop for an estimate on the repair.

Dan

Generally, if a Kicker amp has the power light lit and the protection light isn't lit, it's working. Are you sure that you have signal feeding the amp?

Are you sure your speakers are OK?

Make sure that your ground connection is secure. Make sure there aren't any blown fuses.