Can my 99 civic keyless entry fob be reprogrammed for my 90 integra? If so how? I have tried so many different methods and nothing works. Please help!

 

Did your '90 Integra come with a keyless entry system from the factory ? If not, a remote fob for a newer Honda model doesn't work. The fob is a transmitter... it needs to communicate to a receiver in the car to process the instructions that you have commanded by pressing any button on the fob.