 to out with the key switched on, find the ignition wire, find the accessory wire, and look at them. And if you've got, let's say, coming in, you've got battery voltage, and that's, let's just say, 12 volts, but going out, you only have 10 or 11, you've got a problem with the switch. And you're going to get all kinds of funky errors with low voltage on the modules. You're going to get all those lights coming on. It's not going to charge.