Removed the playfield to install a missing guard over the transformers. Reinstalled and plugged everything back in (can't see how I could have plugged anything into the wrong connector). Now when I turn the game on, the right flipper immediately locks on. What's going on? The flipper switch (at the button) is open, but even if it was closed I wouldn't think the flipper would activate unless the game had booted and a game started. Any ideas what's going on?

Yeah, I had plugged the black and white connectors into the wrong connections. I have swapped them back to correct, but game won't boot now. What did I likely fry? All fuses check good. I only have GI lighting. No boot.