Ok so to fill you in my daughter has a little 6v disney frozen 3 wheeled scooter. It had one 6v motor and battery but it didnt drive well in grass. So i put a dewalt 20v max 5ah battery in it and it hauled but still gets stuck sometime because on one wheel spins. So i bought a second motor and installed it, but my problem is that with both motors hooked up they dont spin, but if i unhook one it works fine and both motors work, just not at the same time. It also has a forward and reverse selecter and a foot pedal switch. My question is do i need a different switch or how to i make both motors worj at the same time.