1995 Saturn SL2, Avital 410SL-1 Remote Start Tach And Brake?

Hello, great site. I am installing an Avital 410SL-1 remote start system in my sister's 95 Saturn SL2. So far things are pretty straight forward but I do have two stumpers. Is there anywhere I can tap into the brake wire other than at the switch? The reason is the switch is located in a real bad location that requires a lot of things to be removed in order to access, including dropping the steering column. Secondly the tach wire / anti grind location. I understand that the signal can be accessed from the coils, but is there anywhere inside the dash that I can tap into, perhaps at the tachometer gauge? Thank you!