I recently purchased a used EZGO. A day after purchasing it, it would not go in reverse then wouldn’t go at all. So after lots of googling I determined I needed a new Forward and Reverse switch. I went purchase a brand new heavy duty one and changed it. Rode maybe a total of 30min since putting the new one on and now it’s doing the same thing. I noticed on the cables connected to the switch melted some of the plastic. What’s causing this? And what do I need to do to correct it? Please explain in simple terms, I am a woman, who’s never owned a golf cart before lol. I have basic mechanic knowledge so just need steps on what to to change and how to do so.