During switch test or in the game, when I hit the either flipper button they will also trigger a seperate switch. For example the right flipper button will also activate the shooter lane switch and the solenoid will fire. Left flipper will activate ball trough 7. Any ideas where to check? All other switches act as they should.

I really don't think it's a diode. With the game in attract mode, if I hit the right flipper button the right shooter coil fires. If I press the left flipper button the ball trough coil fires. If I hold the button down the coil will fire repeatedly.

Thanks for the help. I did test the switch rows and columns and they were all fine. The problem ended up being the launch lever switch. It did not have a diode on it. When it was activated the two coils would fire.