2002 Chevy Cavalier Keyless Entry / Power Window Problem

I thank you greatly in advance for taking the time to look at my question. An after market keyless entry/power window unit was added to my car by the previous owner.

For a short period the locks would not always react right away to the remote. And then I noticed the lock button in the car was not always reacting either and the windows had the same reaction. Finally neither worked. I looked and noticed that the ground had become disconnected at some point.

I reconnected the ground but neither the locks or windows worked. I tried changing out the two fuses and still nothing. Neither the windows or locks will react to the remote or the buttons inside the car.

My valet light still comes on.

Would you have any idea what the problem might be? I'd love to try to fix this myself. I let it go this winter but now it's getting too warm to not have the windows work!

If I double click the Unlock button, the dash lights blink twice and valet light goes off.

If I double click the Lock button, the dash lights blink twice and then the Valet light flashes.

If I double click the option button, the truck opens as it always has.

The unit is an Audiovox model AA925 Rev00

Thanks!

Regards,
Jeremy