Got a 6v battery finally and now I'd like to know two things. First, do I need the resistor now that I have a 6v battery? It is my understanding that a 12v coil without the resistor hooked up is the same as a regular 6v coil? And if I don't need the resistor anymore, can I just leave it hooked up or should I take it off? Secondly, the guy at NAPA told us that we should charge the battery. But I don't have a battery charger that is able to be switched between 12v and 6v. It is strictly 12v charging power. And this is probably a question that shouldn't really have to be asked but the 12v battery charger will burn up the battery, right? I THINK that I may be able to have access to a 6v battery charger but I don't know yet.